Fixed #15116 -- Strip ordering clause from in_bulk() queries, since ordering...

Fixed #15116 -- Strip ordering clause from in_bulk() queries, since ordering information will be lost. Thanks to lamby for the report and patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15457 bcc190cf-cafb-0310-a4f2-bffc1f526a37