DOC: turn off generation of index pages

We are not maintaining these pages for now, so they are more confusing
than helpful.

doc/conf.py

@@ -164,10 +164,10 @@ html_static_path = ['images']
 #html_additional_pages = {}
 
 # If false, no module index is generated.
-#html_use_modindex = True
+html_use_modindex = False
 
 # If false, no index is generated.
-#html_use_index = True
+html_use_index = False
 
 # If true, the index is split into individual pages for each letter.
 #html_split_index = False