Removed some model saves from [8102] which were causing test failures under...

Removed some model saves from [8102] which were causing test failures under Postgres. Thanks to Ramiro Morales for the report (via IRC).

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8104 bcc190cf-cafb-0310-a4f2-bffc1f526a37