Refs #23919 -- Removed six.PY2/PY3 usage

Thanks Tim Graham for the review.

tests/project_template/test_settings.py

@@ -1,18 +1,11 @@
 import os
 import shutil
-import unittest
 
 from django import conf
 from django.test import TestCase
-from django.utils import six
 from django.utils._os import upath
 
 
-@unittest.skipIf(
-    six.PY2,
-    'Python 2 cannot import the project template because '
-    'django/conf/project_template doesn\'t have an __init__.py file.'
-)
 class TestStartProjectSettings(TestCase):
     def setUp(self):
         # Ensure settings.py exists