Fix the test suite.

We had some circular imports that caused the tests (and more?) to fail.

I ran into this when looking at the tests for #583 and #595.

module_build_service/builder/utils.py

@@ -8,7 +8,6 @@ import logging
 import urlgrabber.grabber as grabber
 import urlgrabber.progress as progress
 import module_build_service
-import module_build_service.scheduler
 from module_build_service import log, scm, messaging
 
 
@@ -50,14 +49,6 @@ def execute_cmd(args, stdout=None, stderr=None, cwd=None):
     return out, err
 
 
-def fake_repo_done_message(tag_name):
-    msg = module_build_service.messaging.KojiRepoChange(
-        msg_id='a faked internal message',
-        repo_tag=tag_name + "-build",
-    )
-    module_build_service.scheduler.consumer.work_queue_put(msg)
-
-
 def create_local_repo_from_koji_tag(config, tag, repo_dir, archs=None):
     """
     Downloads the packages build for one of `archs` (defaults to ['x86_64',