Remove unicode prefix (`u`) from strings (#11158)

doc/_static/conf.py.txt

@@ -46,18 +46,18 @@ source_suffix = '.rst'
 root_doc = 'index'
 
 # General information about the project.
-project = u'test'
-copyright = u'2016, test'
-author = u'test'
+project = 'test'
+copyright = '2016, test'
+author = 'test'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = u'test'
+version = 'test'
 # The full version, including alpha/beta/rc tags.
-release = u'test'
+release = 'test'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -131,7 +131,7 @@ html_theme = 'alabaster'
 # The name for this set of Sphinx documents.
 # "<project> v<release> documentation" by default.
 #
-# html_title = u'test vtest'
+# html_title = 'test vtest'
 
 # A shorter title for the navigation bar.  Default is the same as html_title.
 #
@@ -252,8 +252,8 @@ latex_elements = {
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-    (root_doc, 'test.tex', u'test Documentation',
-     u'test', 'manual'),
+    (root_doc, 'test.tex', 'test Documentation',
+     'test', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of
@@ -283,7 +283,7 @@ latex_documents = [
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    (root_doc, 'test', u'test Documentation',
+    (root_doc, 'test', 'test Documentation',
      [author], 1)
 ]
 
@@ -298,7 +298,7 @@ man_pages = [
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-    (root_doc, 'test', u'test Documentation',
+    (root_doc, 'test', 'test Documentation',
      author, 'test', 'One line description of project.',
      'Miscellaneous'),
 ]

doc/usage/configuration.rst

@@ -1921,7 +1921,7 @@ the `Dublin Core metadata <https://dublincore.org/>`_.
    the types can be explicitly overwritten if the default entries are not
    appropriate. Example::
 
-      epub_guide = (('cover', 'cover.html', u'Cover Page'),)
+      epub_guide = (('cover', 'cover.html', 'Cover Page'),)
 
    The default value is ``()``.