dropped python 2.7 compat codes

rest_framework/authtoken/models.py

@@ -3,11 +3,9 @@ import os
 
 from django.conf import settings
 from django.db import models
-from django.utils.encoding import python_2_unicode_compatible
 from django.utils.translation import ugettext_lazy as _
 
 
-@python_2_unicode_compatible
 class Token(models.Model):
     """
     The default authorization token model.

rest_framework/relations.py

@@ -6,9 +6,8 @@ from django.db.models import Manager
 from django.db.models.query import QuerySet
 from django.urls import NoReverseMatch, Resolver404, get_script_prefix, resolve
 from django.utils import six
-from django.utils.encoding import (
-    python_2_unicode_compatible, smart_text, uri_to_iri
-)
+from django.utils.encoding import smart_text, uri_to_iri
+
 from django.utils.six.moves.urllib import parse as urlparse
 from django.utils.translation import ugettext_lazy as _
 
@@ -67,7 +66,6 @@ class Hyperlink(six.text_type):
     is_hyperlink = True
 
 
-@python_2_unicode_compatible
 class PKOnlyObject(object):
     """
     This is a mock object, used for when we only need the pk of the object

tests/test_description.py

@@ -1,5 +1,4 @@
 from django.test import TestCase
-from django.utils.encoding import python_2_unicode_compatible
 
 from rest_framework.compat import apply_markdown
 from rest_framework.utils.formatting import dedent
@@ -153,7 +152,7 @@ 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

tests/test_relations_generic.py

@@ -4,12 +4,10 @@ from django.contrib.contenttypes.fields import (
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
 from django.test import TestCase
-from django.utils.encoding import python_2_unicode_compatible
 
 from rest_framework import serializers
 
 
-@python_2_unicode_compatible
 class Tag(models.Model):
     """
     Tags have a descriptive slug, and are attached to an arbitrary object.
@@ -23,7 +21,6 @@ class Tag(models.Model):
         return self.tag
 
 
-@python_2_unicode_compatible
 class Bookmark(models.Model):
     """
     A URL bookmark that may have multiple tags attached.
@@ -35,7 +32,6 @@ class Bookmark(models.Model):
         return 'Bookmark: %s' % self.url
 
 
-@python_2_unicode_compatible
 class Note(models.Model):
     """
     A textual note that may have multiple tags attached.