run-dev-queue-processors: Remove dead code.

tools/run-dev-queue-processors

@@ -18,10 +18,6 @@ import django
 sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
 django.setup()
 
-from zerver.worker.queue_processors import get_active_worker_queues
-
-queues = get_active_worker_queues()
-
 args = sys.argv[1:]
 subprocess.Popen(['./manage.py', 'process_queue', '--all'] + args,
                  stderr=subprocess.STDOUT)