From cfd5ac06c0f7bceb0a47bff922dcea99ba48d0a2 Mon Sep 17 00:00:00 2001
From: Jon Dufresne <jon.dufresne@gmail.com>
Date: Sun, 23 Sep 2018 19:45:38 -0700
Subject: [PATCH] Remove unnecessary __ne__ definitions

In Python 3, __ne__ defaults to the inverse of __eq__.

From https://docs.python.org/3/reference/datamodel.html#object.__ne__

> By default, __ne__() delegates to __eq__() and inverts the result
> unless it is NotImplemented.
---
 sphinx/builders/html.py   | 4 ----
 sphinx/domains/cpp.py     | 4 ----
 sphinx/locale/__init__.py | 4 ----
 sphinx/pycode/parser.py   | 4 ----
 4 files changed, 16 deletions(-)

diff --git a/sphinx/builders/html.py b/sphinx/builders/html.py
index 75723aea3..be871b33c 100644
--- a/sphinx/builders/html.py
+++ b/sphinx/builders/html.py
@@ -208,10 +208,6 @@ class BuildInfo:
         return (self.config_hash == other.config_hash and
                 self.tags_hash == other.tags_hash)
 
-    def __ne__(self, other):  # type: ignore
-        # type: (BuildInfo) -> bool
-        return not (self == other)  # for py27
-
     def dump(self, f):
         # type: (IO) -> None
         f.write('# Sphinx build info version 1\n'
diff --git a/sphinx/domains/cpp.py b/sphinx/domains/cpp.py
index 190f95bfc..64db2ce9b 100644
--- a/sphinx/domains/cpp.py
+++ b/sphinx/domains/cpp.py
@@ -611,10 +611,6 @@ class ASTBase(UnicodeMixin):
             return False
         return True
 
-    def __ne__(self, other):
-        # type: (Any) -> bool
-        return not self.__eq__(other)
-
     __hash__ = None  # type: Callable[[], int]
 
     def clone(self):
diff --git a/sphinx/locale/__init__.py b/sphinx/locale/__init__.py
index 32eee44d1..a193ac1d1 100644
--- a/sphinx/locale/__init__.py
+++ b/sphinx/locale/__init__.py
@@ -138,10 +138,6 @@ class _TranslationProxy(UserString):
         # type: (Any) -> bool
         return self.data == other
 
-    def __ne__(self, other):
-        # type: (Any) -> bool
-        return self.data != other
-
     def __gt__(self, other):
         # type: (unicode) -> bool
         return self.data > other
diff --git a/sphinx/pycode/parser.py b/sphinx/pycode/parser.py
index 559083100..e1aa1f504 100644
--- a/sphinx/pycode/parser.py
+++ b/sphinx/pycode/parser.py
@@ -128,10 +128,6 @@ class Token:
         else:
             raise ValueError('Unknown value: %r' % other)
 
-    def __ne__(self, other):
-        # type: (Any) -> bool
-        return not (self == other)
-
     def match(self, *conditions):
         # type: (Any) -> bool
         return any(self == candidate for candidate in conditions)