DOC: backport all of matplotlib#12109

tacaswell · tacaswell · commit 9fb90d412f7b · 2018-09-15T19:01:31.000-04:00
In matplotlib#12110 only the pinning got backported, not adding mathmpl back into conf.py
diff --git a/doc/conf.py b/doc/conf.py
@@ -37,15 +37,14 @@
     'IPython.sphinxext.ipython_directive',
     'numpydoc',  # Needs to be loaded *after* autodoc.
     'sphinx_gallery.gen_gallery',
+    'matplotlib.sphinxext.mathmpl',
     'matplotlib.sphinxext.plot_directive',
     'sphinxext.custom_roles',
     'sphinxext.github',
     'sphinxext.math_symbol_table',
     'sphinxext.mock_gui_toolkits',
     'sphinxext.skip_deprecated',
 ]
-if sphinx.version_info < (1, 8):
-    extensions.append('matplotlib.sphinxext.mathmpl')
 
 exclude_patterns = ['api/api_changes/*', 'users/whats_new/*']
 
