Removed unused variable and changed comments about `permalink` decorator into a docstring.
Removed unused variable and changed comments about `permalink` decorator into a docstring.

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%405719

Belgabor/django,Belgabor/django,Belgabor/django