diff --git a/sphinx/builders/latex/__init__.py b/sphinx/builders/latex/__init__.py
index a37a35e61..7ca808b46 100644
--- a/sphinx/builders/latex/__init__.py
+++ b/sphinx/builders/latex/__init__.py
@@ -9,7 +9,6 @@
 """
 
 import os
-import warnings
 from os import path
 from typing import Any, Dict, Iterable, List, Tuple, Union
 
@@ -24,7 +23,6 @@ from sphinx.builders.latex.constants import ADDITIONAL_SETTINGS, DEFAULT_SETTING
 from sphinx.builders.latex.theming import Theme, ThemeFactory
 from sphinx.builders.latex.util import ExtBabel
 from sphinx.config import ENUM, Config
-from sphinx.deprecation import RemovedInSphinx50Warning
 from sphinx.environment.adapters.asset import ImageAdapter
 from sphinx.errors import NoUri, SphinxError
 from sphinx.locale import _, __
@@ -449,18 +447,6 @@ class LaTeXBuilder(Builder):
         filename = path.join(package_dir, 'templates', 'latex', 'sphinxmessages.sty_t')
         copy_asset_file(filename, self.outdir, context=context, renderer=LaTeXRenderer())
 
-    @property
-    def usepackages(self) -> List[Tuple[str, str]]:
-        warnings.warn('LaTeXBuilder.usepackages is deprecated.',
-                      RemovedInSphinx50Warning, stacklevel=2)
-        return self.app.registry.latex_packages
-
-    @property
-    def usepackages_after_hyperref(self) -> List[Tuple[str, str]]:
-        warnings.warn('LaTeXBuilder.usepackages_after_hyperref is deprecated.',
-                      RemovedInSphinx50Warning, stacklevel=2)
-        return self.app.registry.latex_packages_after_hyperref
-
 
 def validate_config_values(app: Sphinx, config: Config) -> None:
     for key in list(config.latex_elements):
diff --git a/sphinx/directives/__init__.py b/sphinx/directives/__init__.py
index 8e8d65f03..d97b87923 100644
--- a/sphinx/directives/__init__.py
+++ b/sphinx/directives/__init__.py
@@ -17,7 +17,6 @@ from docutils.parsers.rst import directives, roles
 
 from sphinx import addnodes
 from sphinx.addnodes import desc_signature
-from sphinx.deprecation import RemovedInSphinx50Warning, deprecated_alias
 from sphinx.util import docutils
 from sphinx.util.docfields import DocFieldTransformer, Field, TypedField
 from sphinx.util.docutils import SphinxDirective
@@ -266,16 +265,6 @@ class DefaultDomain(SphinxDirective):
         return []
 
 
-deprecated_alias('sphinx.directives',
-                 {
-                     'DescDirective': ObjectDescription,
-                 },
-                 RemovedInSphinx50Warning,
-                 {
-                     'DescDirective': 'sphinx.directives.ObjectDescription',
-                 })
-
-
 def setup(app: "Sphinx") -> Dict[str, Any]:
     app.add_config_value("strip_signature_backslash", False, 'env')
     directives.register_directive('default-role', DefaultRole)
diff --git a/sphinx/domains/python.py b/sphinx/domains/python.py
index 5402ce37a..d167d39e1 100644
--- a/sphinx/domains/python.py
+++ b/sphinx/domains/python.py
@@ -26,7 +26,7 @@ from sphinx import addnodes
 from sphinx.addnodes import desc_signature, pending_xref, pending_xref_condition
 from sphinx.application import Sphinx
 from sphinx.builders import Builder
-from sphinx.deprecation import RemovedInSphinx50Warning, RemovedInSphinx60Warning
+from sphinx.deprecation import RemovedInSphinx60Warning
 from sphinx.directives import ObjectDescription
 from sphinx.domains import Domain, Index, IndexEntry, ObjType
 from sphinx.environment import BuildEnvironment
@@ -122,7 +122,7 @@ def type_to_xref(target: str, env: BuildEnvironment = None, suppress_prefix: boo
                         refspecific=refspecific, **kwargs)
 
 
-def _parse_annotation(annotation: str, env: BuildEnvironment = None) -> List[Node]:
+def _parse_annotation(annotation: str, env: BuildEnvironment) -> List[Node]:
     """Parse type annotation."""
     def unparse(node: ast.AST) -> List[Node]:
         if isinstance(node, ast.Attribute):
@@ -210,10 +210,6 @@ def _parse_annotation(annotation: str, env: BuildEnvironment = None) -> List[Nod
 
             raise SyntaxError  # unsupported syntax
 
-    if env is None:
-        warnings.warn("The env parameter for _parse_annotation becomes required now.",
-                      RemovedInSphinx50Warning, stacklevel=2)
-
     try:
         tree = ast_parse(annotation)
         result: List[Node] = []
@@ -979,29 +975,6 @@ class PyProperty(PyObject):
         return _('%s (%s property)') % (attrname, clsname)
 
 
-class PyDecoratorMixin:
-    """
-    Mixin for decorator directives.
-    """
-    def handle_signature(self, sig: str, signode: desc_signature) -> Tuple[str, str]:
-        for cls in self.__class__.__mro__:
-            if cls.__name__ != 'DirectiveAdapter':
-                warnings.warn('PyDecoratorMixin is deprecated. '
-                              'Please check the implementation of %s' % cls,
-                              RemovedInSphinx50Warning, stacklevel=2)
-                break
-        else:
-            warnings.warn('PyDecoratorMixin is deprecated',
-                          RemovedInSphinx50Warning, stacklevel=2)
-
-        ret = super().handle_signature(sig, signode)  # type: ignore
-        signode.insert(0, addnodes.desc_addname('@', '@'))
-        return ret
-
-    def needs_arglist(self) -> bool:
-        return False
-
-
 class PyModule(SphinxDirective):
     """
     Directive to mark description of a new module.
diff --git a/sphinx/domains/std.py b/sphinx/domains/std.py
index 7660f84c9..6e1ad83b6 100644
--- a/sphinx/domains/std.py
+++ b/sphinx/domains/std.py
@@ -10,7 +10,6 @@
 
 import re
 import unicodedata
-import warnings
 from copy import copy
 from typing import (TYPE_CHECKING, Any, Callable, Dict, Iterable, Iterator, List, Optional,
                     Tuple, Type, Union, cast)
@@ -22,7 +21,6 @@ from docutils.statemachine import StringList
 
 from sphinx import addnodes
 from sphinx.addnodes import desc_signature, pending_xref
-from sphinx.deprecation import RemovedInSphinx50Warning
 from sphinx.directives import ObjectDescription
 from sphinx.domains import Domain, ObjType
 from sphinx.locale import _, __
@@ -675,11 +673,6 @@ class StandardDomain(Domain):
                            objtype, name, docname, location=location)
         self.objects[objtype, name] = (self.env.docname, labelid)
 
-    def add_object(self, objtype: str, name: str, docname: str, labelid: str) -> None:
-        warnings.warn('StandardDomain.add_object() is deprecated.',
-                      RemovedInSphinx50Warning, stacklevel=2)
-        self.objects[objtype, name] = (docname, labelid)
-
     @property
     def _terms(self) -> Dict[str, Tuple[str, str]]:
         """.. note:: Will be removed soon. internal use only."""
diff --git a/sphinx/util/__init__.py b/sphinx/util/__init__.py
index 384925157..6d403af12 100644
--- a/sphinx/util/__init__.py
+++ b/sphinx/util/__init__.py
@@ -17,7 +17,6 @@ import sys
 import tempfile
 import traceback
 import unicodedata
-import warnings
 from datetime import datetime
 from importlib import import_module
 from os import path
@@ -26,7 +25,6 @@ from typing import (IO, TYPE_CHECKING, Any, Callable, Dict, Iterable, Iterator,
                     Pattern, Set, Tuple, Type)
 from urllib.parse import parse_qsl, quote_plus, urlencode, urlsplit, urlunsplit
 
-from sphinx.deprecation import RemovedInSphinx50Warning
 from sphinx.errors import ExtensionError, FiletypeNotFoundError, SphinxParallelError
 from sphinx.locale import __
 from sphinx.util import logging
@@ -37,7 +35,7 @@ from sphinx.util.nodes import (caption_ref_re, explicit_title_re,  # noqa
 # import other utilities; partly for backwards compatibility, so don't
 # prune unused ones indiscriminately
 from sphinx.util.osutil import (SEP, copyfile, copytimes, ensuredir, make_filename,  # noqa
-                                movefile, mtimes_of_files, os_path, relative_uri)
+                                mtimes_of_files, os_path, relative_uri)
 from sphinx.util.typing import PathMatcher
 
 if TYPE_CHECKING:
@@ -337,32 +335,6 @@ def parselinenos(spec: str, total: int) -> List[int]:
     return items
 
 
-def force_decode(string: str, encoding: str) -> str:
-    """Forcibly get a unicode string out of a bytestring."""
-    warnings.warn('force_decode() is deprecated.',
-                  RemovedInSphinx50Warning, stacklevel=2)
-    if isinstance(string, bytes):
-        try:
-            if encoding:
-                string = string.decode(encoding)
-            else:
-                # try decoding with utf-8, should only work for real UTF-8
-                string = string.decode()
-        except UnicodeError:
-            # last resort -- can't fail
-            string = string.decode('latin1')
-    return string
-
-
-def rpartition(s: str, t: str) -> Tuple[str, str]:
-    """Similar to str.rpartition from 2.5, but doesn't return the separator."""
-    warnings.warn('rpartition() is now deprecated.', RemovedInSphinx50Warning, stacklevel=2)
-    i = s.rfind(t)
-    if i != -1:
-        return s[:i], s[i + len(t):]
-    return '', s
-
-
 def split_into(n: int, type: str, value: str) -> List[str]:
     """Split an index entry into a given number of parts at semicolons."""
     parts = [x.strip() for x in value.split(';', n - 1)]
diff --git a/sphinx/util/inspect.py b/sphinx/util/inspect.py
index 3a282ad7c..ea947894d 100644
--- a/sphinx/util/inspect.py
+++ b/sphinx/util/inspect.py
@@ -16,7 +16,6 @@ import re
 import sys
 import types
 import typing
-import warnings
 from functools import partial, partialmethod
 from importlib import import_module
 from inspect import Parameter, isclass, ismethod, ismethoddescriptor, ismodule  # NOQA
@@ -24,7 +23,6 @@ from io import StringIO
 from types import ModuleType
 from typing import Any, Callable, Dict, Mapping, Optional, Sequence, Tuple, Type, cast
 
-from sphinx.deprecation import RemovedInSphinx50Warning
 from sphinx.pycode.ast import ast  # for py36-37
 from sphinx.pycode.ast import unparse as ast_unparse
 from sphinx.util import logging
@@ -47,69 +45,6 @@ logger = logging.getLogger(__name__)
 memory_address_re = re.compile(r' at 0x[0-9a-f]{8,16}(?=>)', re.IGNORECASE)
 
 
-# Copied from the definition of inspect.getfullargspec from Python master,
-# and modified to remove the use of special flags that break decorated
-# callables and bound methods in the name of backwards compatibility. Used
-# under the terms of PSF license v2, which requires the above statement
-# and the following:
-#
-#   Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-#   2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Python Software
-#   Foundation; All Rights Reserved
-def getargspec(func: Callable) -> Any:
-    """Like inspect.getfullargspec but supports bound methods, and wrapped
-    methods."""
-    warnings.warn('sphinx.ext.inspect.getargspec() is deprecated',
-                  RemovedInSphinx50Warning, stacklevel=2)
-
-    sig = inspect.signature(func)
-
-    args = []
-    varargs = None
-    varkw = None
-    kwonlyargs = []
-    defaults = ()
-    annotations = {}
-    defaults = ()
-    kwdefaults = {}
-
-    if sig.return_annotation is not sig.empty:
-        annotations['return'] = sig.return_annotation
-
-    for param in sig.parameters.values():
-        kind = param.kind
-        name = param.name
-
-        if kind is Parameter.POSITIONAL_ONLY:
-            args.append(name)
-        elif kind is Parameter.POSITIONAL_OR_KEYWORD:
-            args.append(name)
-            if param.default is not param.empty:
-                defaults += (param.default,)  # type: ignore
-        elif kind is Parameter.VAR_POSITIONAL:
-            varargs = name
-        elif kind is Parameter.KEYWORD_ONLY:
-            kwonlyargs.append(name)
-            if param.default is not param.empty:
-                kwdefaults[name] = param.default
-        elif kind is Parameter.VAR_KEYWORD:
-            varkw = name
-
-        if param.annotation is not param.empty:
-            annotations[name] = param.annotation
-
-    if not kwdefaults:
-        # compatibility with 'func.__kwdefaults__'
-        kwdefaults = None
-
-    if not defaults:
-        # compatibility with 'func.__defaults__'
-        defaults = None
-
-    return inspect.FullArgSpec(args, varargs, varkw, defaults,
-                               kwonlyargs, kwdefaults, annotations)
-
-
 def unwrap(obj: Any) -> Any:
     """Get an original object from wrapped object (wrapped functions)."""
     try:
@@ -623,26 +558,19 @@ def _should_unwrap(subject: Callable) -> bool:
     return False
 
 
-def signature(subject: Callable, bound_method: bool = False, follow_wrapped: bool = None,
-              type_aliases: Dict = {}) -> inspect.Signature:
+def signature(subject: Callable, bound_method: bool = False, type_aliases: Dict = {}
+              ) -> inspect.Signature:
     """Return a Signature object for the given *subject*.
 
     :param bound_method: Specify *subject* is a bound method or not
-    :param follow_wrapped: Same as ``inspect.signature()``.
     """
 
-    if follow_wrapped is None:
-        follow_wrapped = True
-    else:
-        warnings.warn('The follow_wrapped argument of sphinx.util.inspect.signature() is '
-                      'deprecated', RemovedInSphinx50Warning, stacklevel=2)
-
     try:
         try:
             if _should_unwrap(subject):
                 signature = inspect.signature(subject)
             else:
-                signature = inspect.signature(subject, follow_wrapped=follow_wrapped)
+                signature = inspect.signature(subject, follow_wrapped=True)
         except ValueError:
             # follow built-in wrappers up (ex. functools.lru_cache)
             signature = inspect.signature(subject)
diff --git a/sphinx/util/osutil.py b/sphinx/util/osutil.py
index 8e3d7afda..ac564b84c 100644
--- a/sphinx/util/osutil.py
+++ b/sphinx/util/osutil.py
@@ -14,13 +14,10 @@ import os
 import re
 import shutil
 import sys
-import warnings
 from io import StringIO
 from os import path
 from typing import Any, Generator, Iterator, List, Optional, Type
 
-from sphinx.deprecation import RemovedInSphinx50Warning
-
 try:
     # for ALT Linux (#6712)
     from sphinx.testing.path import path as Path
@@ -84,19 +81,6 @@ def mtimes_of_files(dirnames: List[str], suffix: str) -> Iterator[float]:
                         pass
 
 
-def movefile(source: str, dest: str) -> None:
-    """Move a file, removing the destination if it exists."""
-    warnings.warn('sphinx.util.osutil.movefile() is deprecated for removal. '
-                  'Please use os.replace() instead.',
-                  RemovedInSphinx50Warning, stacklevel=2)
-    if os.path.exists(dest):
-        try:
-            os.unlink(dest)
-        except OSError:
-            pass
-    os.rename(source, dest)
-
-
 def copytimes(source: str, dest: str) -> None:
     """Copy a file's modification times."""
     st = os.stat(source)
diff --git a/sphinx/util/requests.py b/sphinx/util/requests.py
index 8ae435d41..10461a212 100644
--- a/sphinx/util/requests.py
+++ b/sphinx/util/requests.py
@@ -18,14 +18,6 @@ import requests
 
 import sphinx
 from sphinx.config import Config
-from sphinx.deprecation import RemovedInSphinx50Warning
-
-try:
-    from requests.packages.urllib3.exceptions import SSLError
-except ImportError:
-    # python-requests package in Debian jessie does not provide ``requests.packages.urllib3``.
-    # So try to import the exceptions from urllib3 package.
-    from urllib3.exceptions import SSLError  # type: ignore
 
 try:
     from requests.packages.urllib3.exceptions import InsecureRequestWarning
@@ -42,22 +34,6 @@ useragent_header = [('User-Agent',
                      'Mozilla/5.0 (X11; Linux x86_64; rv:25.0) Gecko/20100101 Firefox/25.0')]
 
 
-def is_ssl_error(exc: Exception) -> bool:
-    """Check an exception is SSLError."""
-    warnings.warn(
-        "is_ssl_error() is outdated and likely returns incorrect results "
-        "for modern versions of Requests.",
-        RemovedInSphinx50Warning)
-    if isinstance(exc, SSLError):
-        return True
-    else:
-        args = getattr(exc, 'args', [])
-        if args and isinstance(args[0], SSLError):
-            return True
-        else:
-            return False
-
-
 @contextmanager
 def ignore_insecure_warning(**kwargs: Any) -> Generator[None, None, None]:
     with warnings.catch_warnings():
diff --git a/sphinx/writers/html.py b/sphinx/writers/html.py
index fead4c61d..effd04e05 100644
--- a/sphinx/writers/html.py
+++ b/sphinx/writers/html.py
@@ -23,7 +23,7 @@ from docutils.writers.html4css1 import Writer
 
 from sphinx import addnodes
 from sphinx.builders import Builder
-from sphinx.deprecation import RemovedInSphinx50Warning, RemovedInSphinx60Warning
+from sphinx.deprecation import RemovedInSphinx60Warning
 from sphinx.locale import _, __, admonitionlabels
 from sphinx.util import logging
 from sphinx.util.docutils import SphinxTranslator
@@ -879,12 +879,6 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
     def unknown_visit(self, node: Node) -> None:
         raise NotImplementedError('Unknown node: ' + node.__class__.__name__)
 
-    @property
-    def permalink_text(self) -> str:
-        warnings.warn('HTMLTranslator.permalink_text is deprecated.',
-                      RemovedInSphinx50Warning, stacklevel=2)
-        return self.config.html_permalinks_icon
-
     @property
     def _fieldlist_row_index(self):
         warnings.warn('_fieldlist_row_index is deprecated',
diff --git a/sphinx/writers/html5.py b/sphinx/writers/html5.py
index bba07f447..7c632abd7 100644
--- a/sphinx/writers/html5.py
+++ b/sphinx/writers/html5.py
@@ -21,7 +21,7 @@ from docutils.writers.html5_polyglot import HTMLTranslator as BaseTranslator
 
 from sphinx import addnodes
 from sphinx.builders import Builder
-from sphinx.deprecation import RemovedInSphinx50Warning, RemovedInSphinx60Warning
+from sphinx.deprecation import RemovedInSphinx60Warning
 from sphinx.locale import _, __, admonitionlabels
 from sphinx.util import logging
 from sphinx.util.docutils import SphinxTranslator
@@ -814,12 +814,6 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
     def unknown_visit(self, node: Node) -> None:
         raise NotImplementedError('Unknown node: ' + node.__class__.__name__)
 
-    @property
-    def permalink_text(self) -> str:
-        warnings.warn('HTMLTranslator.permalink_text is deprecated.',
-                      RemovedInSphinx50Warning, stacklevel=2)
-        return self.config.html_permalinks_icon
-
     def generate_targets_for_table(self, node: Element) -> None:
         """Generate hyperlink targets for tables.
 
diff --git a/sphinx/writers/latex.py b/sphinx/writers/latex.py
index 6f7e20241..0b67ebf77 100644
--- a/sphinx/writers/latex.py
+++ b/sphinx/writers/latex.py
@@ -12,7 +12,6 @@
 """
 
 import re
-import warnings
 from collections import defaultdict
 from os import path
 from typing import TYPE_CHECKING, Any, Dict, Iterable, List, Set, Tuple, cast
@@ -21,7 +20,6 @@ from docutils import nodes, writers
 from docutils.nodes import Element, Node, Text
 
 from sphinx import addnodes, highlighting
-from sphinx.deprecation import RemovedInSphinx50Warning
 from sphinx.domains import IndexEntry
 from sphinx.domains.std import StandardDomain
 from sphinx.errors import SphinxError
@@ -89,13 +87,7 @@ class LaTeXWriter(writers.Writer):
         self.theme: Theme = None
 
     def translate(self) -> None:
-        try:
-            visitor = self.builder.create_translator(self.document, self.builder, self.theme)
-        except TypeError:
-            warnings.warn('LaTeXTranslator now takes 3rd argument; "theme".',
-                          RemovedInSphinx50Warning, stacklevel=2)
-            visitor = self.builder.create_translator(self.document, self.builder)
-
+        visitor = self.builder.create_translator(self.document, self.builder, self.theme)
         self.document.walkabout(visitor)
         self.output = cast(LaTeXTranslator, visitor).astext()
 
@@ -280,15 +272,11 @@ class LaTeXTranslator(SphinxTranslator):
     docclasses = ('howto', 'manual')
 
     def __init__(self, document: nodes.document, builder: "LaTeXBuilder",
-                 theme: "Theme" = None) -> None:
+                 theme: "Theme") -> None:
         super().__init__(document, builder)
         self.body: List[str] = []
         self.theme = theme
 
-        if theme is None:
-            warnings.warn('LaTeXTranslator now takes 3rd argument; "theme".',
-                          RemovedInSphinx50Warning, stacklevel=2)
-
         # flags
         self.in_title = 0
         self.in_production_list = 0
@@ -312,30 +300,8 @@ class LaTeXTranslator(SphinxTranslator):
 
         # initial section names
         self.sectionnames = LATEXSECTIONNAMES[:]
-
-        if self.theme:
-            # new style: control sectioning via theme's setting
-            #
-            # .. note:: template variables(elements) are already assigned in builder
-            docclass = self.theme.docclass
-            if self.theme.toplevel_sectioning == 'section':
-                self.sectionnames.remove('chapter')
-        else:
-            # old style: sectioning control is hard-coded
-            # but some have other interface in config file
-            self.elements['wrapperclass'] = self.format_docclass(self.settings.docclass)
-
-            # we assume LaTeX class provides \chapter command except in case
-            # of non-Japanese 'howto' case
-            if document.get('docclass') == 'howto':
-                docclass = self.config.latex_docclass.get('howto', 'article')
-                if docclass[0] == 'j':  # Japanese class...
-                    pass
-                else:
-                    self.sectionnames.remove('chapter')
-            else:
-                docclass = self.config.latex_docclass.get('manual', 'report')
-            self.elements['docclass'] = docclass
+        if self.theme.toplevel_sectioning == 'section':
+            self.sectionnames.remove('chapter')
 
         # determine top section level
         self.top_sectionlevel = 1
@@ -345,7 +311,7 @@ class LaTeXTranslator(SphinxTranslator):
                     self.sectionnames.index(self.config.latex_toplevel_sectioning)
             except ValueError:
                 logger.warning(__('unknown %r toplevel_sectioning for class %r') %
-                               (self.config.latex_toplevel_sectioning, docclass))
+                               (self.config.latex_toplevel_sectioning, self.theme.docclass))
 
         if self.config.numfig:
             self.numfig_secnum_depth = self.config.numfig_secnum_depth
@@ -444,14 +410,6 @@ class LaTeXTranslator(SphinxTranslator):
         self.body = self.bodystack.pop()
         return body
 
-    def format_docclass(self, docclass: str) -> str:
-        """Prepends prefix to sphinx document classes"""
-        warnings.warn('LaTeXWriter.format_docclass() is deprecated.',
-                      RemovedInSphinx50Warning, stacklevel=2)
-        if docclass in self.docclasses:
-            docclass = 'sphinx' + docclass
-        return docclass
-
     def astext(self) -> str:
         self.elements.update({
             'body': ''.join(self.body),
diff --git a/sphinx/writers/texinfo.py b/sphinx/writers/texinfo.py
index 9a281dc9a..11f2fba0f 100644
--- a/sphinx/writers/texinfo.py
+++ b/sphinx/writers/texinfo.py
@@ -10,16 +10,14 @@
 
 import re
 import textwrap
-import warnings
 from os import path
-from typing import (TYPE_CHECKING, Any, Dict, Iterable, Iterator, List, Optional, Pattern, Set,
-                    Tuple, Union, cast)
+from typing import (TYPE_CHECKING, Any, Dict, Iterable, Iterator, List, Pattern, Set, Tuple,
+                    Union, cast)
 
 from docutils import nodes, writers
 from docutils.nodes import Element, Node, Text
 
 from sphinx import __display_version__, addnodes
-from sphinx.deprecation import RemovedInSphinx50Warning
 from sphinx.domains import IndexEntry
 from sphinx.domains.index import IndexDomain
 from sphinx.errors import ExtensionError
@@ -1566,11 +1564,3 @@ class TexinfoTranslator(SphinxTranslator):
         self.body.append('\n\n@example\n%s\n@end example\n\n' %
                          self.escape_arg(node.astext()))
         raise nodes.SkipNode
-
-    @property
-    def desc(self) -> Optional[addnodes.desc]:
-        warnings.warn('TexinfoWriter.desc is deprecated.', RemovedInSphinx50Warning)
-        if len(self.descs):
-            return self.descs[-1]
-        else:
-            return None