Fixed #8331 -- Added style parameter to sqlite backend implementation of...

Fixed #8331 -- Added style parameter to sqlite backend implementation of sql_remove_table_constraints, missed in recent db backend refactor. Thanks to d00gs for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8364 bcc190cf-cafb-0310-a4f2-bffc1f526a37