Updated openstack/openstack
Project: openstack/nova  58f10fe3760e4ad3efb1289cfc3d3f983c8796ea

Remove unused method within filter_scheduler test

_fake_empty_call_zone_method is never used by method
test_run_instance_no_hosts within FilterSchedulerTestCase.
So remove it.

Change-Id: If8c952fbae36a7417d43ca69f19f513812667e71