Fix warnings that have crept up.

Author: abergeron

doc/c_api/group/group__context__flags.rst

@@ -151,10 +151,6 @@ def setup(app):
 # using the given strftime format.
 html_last_updated_fmt = '%b %d, %Y'
 
-# If true, SmartyPants will be used to convert quotes and dashes to
-# typographically correct entities.
-html_use_smartypants = True
-
 # Custom sidebar templates, maps document names to template names.
 #html_sidebars = {}