Removed unused import (promise.Promise)

Mike Pickfield · Mike Pickfield · commit 023ac83a2422 · 2020-07-27T16:45:19.000-04:00
diff --git a/graphene_sqlalchemy/tests/test_types.py b/graphene_sqlalchemy/tests/test_types.py
@@ -3,7 +3,6 @@
 import six  # noqa F401
 import sqlalchemy.exc
 import sqlalchemy.orm.exc
-from promise import Promise
 
 from .. import utils
 
