remove dep on python_2_unicode_compatible

python_2_unicode_compatible is not available in all Django versions

rest_framework/tests/test_description.py

@@ -2,7 +2,6 @@
 
 from __future__ import unicode_literals
 from django.test import TestCase
-from django.utils.encoding import python_2_unicode_compatible
 from rest_framework.compat import apply_markdown, smart_text
 from rest_framework.views import APIView
 from rest_framework.tests.description import ViewWithNonASCIICharactersInDocstring
@@ -108,17 +107,18 @@ class TestViewNamesAndDescriptions(TestCase):
         """
         # use a mock object instead of gettext_lazy to ensure that we can't end
         # up with a test case string in our l10n catalog
-        @python_2_unicode_compatible
         class MockLazyStr(object):
             def __init__(self, string):
                 self.s = string
             def __str__(self):
                 return self.s
+            def __unicode__(self):
+                return self.s
 
         class MockView(APIView):
-            __doc__ = MockLazyStr("a gettext string")
+            __doc__ = MockLazyStr(u"a gettext string")
 
-        self.assertEqual(MockView().get_view_description(), 'a gettext string')
+        self.assertEqual(MockView().get_view_description(), u'a gettext string')
 
     def test_markdown(self):
         """