Simplified imports from django.db and django.contrib.gis.db.

tests/backends/test_utils.py

@@ -1,11 +1,10 @@
 """Tests for django.db.backends.utils"""
 from decimal import Decimal, Rounded
 
-from django.db import connection
+from django.db import NotSupportedError, connection
 from django.db.backends.utils import (
     format_number, split_identifier, truncate_name,
 )
-from django.db.utils import NotSupportedError
 from django.test import (
     SimpleTestCase, TransactionTestCase, skipIfDBFeature, skipUnlessDBFeature,
 )