Merge pull request #5786 from tk0miya/requests-2.5

Update deps: requests-2.5.0 or above

CHANGES

@@ -15,6 +15,7 @@ Dependencies
 * LaTeX builder with :confval:`latex_engine` set to ``'xelatex'`` or to
   ``'lualatex'`` requires (by default) the ``FreeFont`` fonts,
   which in Ubuntu xenial are provided by package ``fonts-freefont-otf``.
+* requests 2.5.0 or above
 
 Incompatible changes
 --------------------

setup.py

@@ -23,7 +23,7 @@ install_requires = [
     'babel>=1.3,!=2.0',
     'alabaster>=0.7,<0.8',
     'imagesize',
-    'requests>=2.0.0',
+    'requests>=2.5.0',
     'setuptools',
     'packaging',
 ]

sphinx/util/requests.py

@@ -53,13 +53,6 @@ else:
     except (pkg_resources.DistributionNotFound,
             pkg_resources.VersionConflict):
         pass  # ignored
-    except pkg_resources.UnknownExtra:
-        warnings.warn(
-            'Some links may return broken results due to being unable to '
-            'check the Server Name Indication (SNI) in the returned SSL cert '
-            'against the hostname in the url requested. Recommended to '
-            'install requests-2.4.1+.'
-        )
 
 if False:
     # For type annotation