Stopped using django.utils.unittest in the test suite.

Refs #20680.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/serializers/tests.py b/tests/serializers/tests.py
index 038276ca21..bff7c53249 100644
--- a/tests/serializers/tests.py
+++ b/tests/serializers/tests.py
@@ -3,6 +3,7 @@ from __future__ import absolute_import, unicode_literals
 # -*- coding: utf-8 -*-
 import json
 from datetime import datetime
+import unittest
 from xml.dom import minidom
 
 from django.conf import settings
@@ -11,7 +12,6 @@ from django.db import transaction, connection
 from django.test import TestCase, TransactionTestCase, Approximate
 from django.utils import six
 from django.utils.six import StringIO
-from django.utils import unittest
 
 from .models import (Category, Author, Article, AuthorProfile, Actor, Movie,
     Score, Player, Team)