Refs #23919 -- Removed six.<various>_types usage

Thanks Tim Graham and Simon Charette for the reviews.

tests/utils_tests/test_text.py

@@ -1,7 +1,7 @@
 import json
 
 from django.test import SimpleTestCase
-from django.utils import six, text
+from django.utils import text
 from django.utils.functional import lazystr
 from django.utils.text import format_lazy
 from django.utils.translation import override, ugettext_lazy
@@ -161,7 +161,6 @@ class TestUtilsText(SimpleTestCase):
         """normalize_newlines should be able to handle bytes too"""
         normalized = text.normalize_newlines(b"abc\ndef\rghi\r\n")
         self.assertEqual(normalized, "abc\ndef\nghi\n")
-        self.assertIsInstance(normalized, six.text_type)
 
     def test_phone2numeric(self):
         numeric = text.phone2numeric('0800 flowers')