Updated openstack/openstack
Project: openstack/nova  6d201e9ece87e348b8b9389624e199f5876fc78b
null
VMware: remove unused class

The Failure class has not been used since it was added
to the code base. This was done in the commit below:-
https://code.launchpad.net/~citrix-openstack/nova/vmware-vsphere-support/+merge/53060

Change-Id: Ib4f0372f847bcbefde27c02b6ce01202482a46c0