test: Fix flake8 checking

abawchen · abawchen · commit b45c55919d81 · 2018-06-22T08:32:36.000+08:00
diff --git a/graphene_mongo/tests/test_converter.py b/graphene_mongo/tests/test_converter.py
@@ -52,7 +52,7 @@ def test_sould_int_convert_int():
 
 def test_sould_long_convert_int():
     assert_conversion(mongoengine.LongField, graphene.Int)
-    
+
 
 def test_should_object_id_convert_id():
     assert_conversion(mongoengine.ObjectIdField, graphene.ID)
