pep8 fixes

Author: adamcharnock

graphene/contrib/django/tests/filters.py

@@ -21,4 +21,3 @@ class Meta:
         model = Pet
         fields = ['name']
         order_by = False
-

graphene/contrib/django/tests/test_form_converter.py

@@ -103,4 +103,3 @@ def test_should_manytoone_convert_connectionorlist():
     field = forms.ModelChoiceField(Reporter.objects.all())
     graphene_type = convert_form_field(field)
     assert isinstance(graphene_type, graphene.ID)
-