WIP Use a data factory for Phabricator mock responses

Using carefully-crafted test data fixtures can lead to brittle tests and
difficult-to-construct test scenarios in our integration tests.
Writing tests is easier when fixtures are generated with test data
factories instead.

Author: mars-f

tests/test_dockerflow.py

@@ -4,8 +4,6 @@
 
 import json
 
-from tests.conftest import versionfile, app
-
 
 def test_dockerflow_lb_endpoint_returns_200(client):
     assert client.get('/__lbheartbeat__').status_code == 200