Updated openstack/openstack
Project: openstack/nova  a1a9d7b78ff55e4760be23b9d12aa983e2787927

Remove duplicated import in unit test

A couple of unit tests were importing twice mock or mox.
This patch just remove the duplicated import.

Change-Id: I0c66746348e184a3846cadd40d7d7cbb7d594564