Cleaned up admin sites.py imports.
Cleaned up admin sites.py imports.

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@16134 bcc190cf-cafb-0310-a4f2-bffc1f526a37

disqus/django-old,disqus/django-old,mitsuhiko/django,mitsuhiko/django,mitsuhiko/django,disqus/django-old