Remove commented configuration of the intersphinx module

The intersphinx module should not be used. Remove commented configuration
of the intersphinx module to not enable it in the future.

Change-Id: I165529af3d1a1ff720d9731592d7668f6f53abd2
Related-Bug: #1368910

doc/source/conf.py

@@ -24,7 +24,6 @@ import sys
 extensions = [
     'sphinx.ext.autodoc',
     'yasfb',
-    #'sphinx.ext.intersphinx',
     #'oslosphinx'
 ]
 
@@ -89,6 +88,3 @@ latex_documents = [
      u'%s Documentation' % project,
      u'OpenStack Foundation', 'manual'),
 ]
-
-# Example configuration for intersphinx: refer to the Python standard library.
-#intersphinx_mapping = {'http://docs.python.org/': None}