remove Python 2 (#1547)

Co-authored-by: Erik Wrede <erikwrede@users.noreply.github.com>

Author: dulmandakh

examples/starwars/tests/snapshots/snap_test_query.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # snapshottest: v1 - https://goo.gl/zC4yUc
-from __future__ import unicode_literals
-
 from snapshottest import Snapshot
 
 snapshots = Snapshot()

examples/starwars_relay/tests/snapshots/snap_test_connections.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # snapshottest: v1 - https://goo.gl/zC4yUc
-from __future__ import unicode_literals
-
 from snapshottest import Snapshot
 
 snapshots = Snapshot()

examples/starwars_relay/tests/snapshots/snap_test_mutation.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # snapshottest: v1 - https://goo.gl/zC4yUc
-from __future__ import unicode_literals
-
 from snapshottest import Snapshot
 
 snapshots = Snapshot()

examples/starwars_relay/tests/snapshots/snap_test_objectidentification.py

@@ -1,7 +1,5 @@
 # -*- coding: utf-8 -*-
 # snapshottest: v1 - https://goo.gl/zC4yUc
-from __future__ import unicode_literals
-
 from snapshottest import Snapshot
 
 

graphene/pyutils/version.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 import datetime
 import os
 import subprocess

graphene/types/datetime.py

@@ -1,5 +1,3 @@
-from __future__ import absolute_import
-
 import datetime
 
 from graphql.error import GraphQLError

graphene/types/decimal.py

@@ -1,5 +1,3 @@
-from __future__ import absolute_import
-
 from decimal import Decimal as _Decimal
 
 from graphql import Undefined

graphene/types/generic.py

@@ -1,5 +1,3 @@
-from __future__ import unicode_literals
-
 from graphql.language.ast import (
     BooleanValueNode,
     FloatValueNode,

graphene/types/json.py

@@ -1,5 +1,3 @@
-from __future__ import absolute_import
-
 import json
 
 from graphql import Undefined

graphene/types/uuid.py

@@ -1,4 +1,3 @@
-from __future__ import absolute_import
 from uuid import UUID as _UUID
 
 from graphql.language.ast import StringValueNode