Redundant test of CPU resources in test_tracker
Redundant test of CPU resources in test_tracker

There was a test in test_resource_tracker.py that was doing nothing more
than ensuring the vcpus_used value was properly set after an instance
claim. This code path is already tested multiple times in
test_tracker.py's TestInstanceClaim methods.

Change-Id: I5bcc4fe60dc777c7fbe739b6030d9e897e8ecdef

gooddata/openstack-nova,mikalstill/nova,klmitch/nova,mahak/nova,Juniper/nova,klmitch/nova,rahulunair/nova,phenoxim/nova,Juniper/nova,mahak/nova,hanlind/nova,openstack/nova,rajalokan/nova,cloudbase/nova,openstack/nova,alaski/nova,cloudbase/nova,jianghuaw/nova,jianghuaw/nova,gooddata/openstack-nova,rajalokan/nova,Juniper/nova,mahak/nova,vmturbo/nova,alaski/nova,rahulunair/nova,hanlind/nova,klmitch/nova,rajalokan/nova,jianghuaw/nova,vmturbo/nova,Juniper/nova,vmturbo/nova,sebrandon1/nova,klmitch/nova,rajalokan/nova,gooddata/openstack-nova,gooddata/openstack-nova,mikalstill/nova,openstack/nova,jianghuaw/nova,rahulunair/nova,hanlind/nova,mikalstill/nova,vmturbo/nova,sebrandon1/nova,phenoxim/nova,cloudbase/nova,sebrandon1/nova