Updated openstack/openstack
Project: openstack/nova  9d8a34ff7e001357507ba00bb0c619b5c8fb6eeb

Remove unused code from test_compute_cells

The decorator was introduced in change
I048cc532614c602f3aa6b539fb51e951174e4598 - but it's usage has since
been removed.

Change-Id: Icf00f85a72198aeaf1ac7d32fb492b020399e3b4