Remove six.PY3 references from tests

graphene/types/base.py

@@ -1,9 +1,7 @@
+from typing import Type
+
 from ..utils.subclass_with_meta import SubclassWithMeta
 from ..utils.trim_docstring import trim_docstring
-import six
-
-if six.PY3:
-    from typing import Type
 
 
 class BaseOptions(object):

graphene/types/scalars.py

@@ -1,12 +1,10 @@
-import six
+from typing import Any
+
 from graphql.language.ast import BooleanValue, FloatValue, IntValue, StringValue
 
 from .base import BaseOptions, BaseType
 from .unmountedtype import UnmountedType
 
-if six.PY3:
-    from typing import Any
-
 
 class ScalarOptions(BaseOptions):
     pass

graphene/types/tests/test_enum.py

@@ -115,9 +115,6 @@ def test_enum_from_builtin_enum_accepts_lambda_description():
 
 
 def test_enum_from_python3_enum_uses_enum_doc():
-    if not six.PY3:
-        return
-
     from enum import Enum as PyEnum
 
     class Color(PyEnum):