Remove unneeded stub from test/common
Remove unneeded stub from test/common

Change-Id: I1d3744e3b801c69d8bbb8f870f8141725341db23

srznew/heat,noironetworks/heat,noironetworks/heat,cwolferh/heat-scratch,dragorosson/heat,rh-s/heat,cwolferh/heat-scratch,takeshineshiro/heat,dims/heat,gonzolino/heat,dragorosson/heat,openstack/heat,gonzolino/heat,dims/heat,jasondunsmore/heat,maestro-hybrid-cloud/heat,miguelgrinberg/heat,pratikmallya/heat,rh-s/heat,steveb/heat,miguelgrinberg/heat,maestro-hybrid-cloud/heat,cryptickp/heat,takeshineshiro/heat,jasondunsmore/heat,openstack/heat,cryptickp/heat,srznew/heat,pratikmallya/heat,steveb/heat