Remove explicit use of six

tests/test_octodns_provider_edgedns.py

@@ -9,7 +9,6 @@ from __future__ import absolute_import, division, print_function, \
 from os.path import dirname, join
 from requests import HTTPError
 from requests_mock import ANY, mock as requests_mock
-from six import text_type
 from unittest import TestCase
 
 from octodns.record import Record
@@ -149,7 +148,7 @@ class TestEdgeDnsProvider(TestCase):
                 changes = provider.apply(plan)
             except NameError as e:
                 expected = "contractId not specified to create zone"
-                self.assertEquals(text_type(e), expected)
+                self.assertEquals(str(e), expected)
 
 
 class TestDeprecatedAkamaiProvider(TestCase):