Fixed #16225 -- Removed unused imports. Many thanks to Aymeric Augustin for the work on the patch and Alex for reviewing.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16539 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/validation/test_unique.py

@@ -2,9 +2,7 @@ from __future__ import with_statement
 
 import datetime
 
-from django.conf import settings
 from django.core.exceptions import ValidationError
-from django.db import connection
 from django.test import TestCase
 from django.utils import unittest