Remove unused fake_flags
Remove unused fake_flags

fake_flags.py should have been removed in change
I3424d0a401b3ef7a3254d3e913263554361a52ff but somehow it's left
untouched in that change.  This module has been replaced by
cinder/tests/conf_fixture.py, and shouldn't be around anymore.

Change-Id: Ied840b95253d998c1b3326c1dde9d469fa783c85

sasukeh/cinder,rakeshmi/cinder,redhat-openstack/cinder,nikesh-mahalka/cinder,phenoxim/cinder,CloudServer/cinder,spring-week-topos/cinder-week,tlakshman26/cinder-new-branch,potsmaster/cinder,blueboxgroup/cinder,duhzecca/cinder,petrutlucian94/cinder,rakeshmi/cinder,Hybrid-Cloud/cinder,openstack/cinder,duhzecca/cinder,NetApp/cinder,mahak/cinder,scality/cinder,scality/cinder,cloudbase/cinder,JioCloud/cinder,blueboxgroup/cinder,potsmaster/cinder,Akrog/cinder,julianwang/cinder,j-griffith/cinder,manojhirway/ExistingImagesOnNFS,Datera/cinder,tlakshman26/cinder-new-branch,sasukeh/cinder,Thingee/cinder,Akrog/cinder,hguemar/cinder,github-borat/cinder,Nexenta/cinder,Accelerite/cinder,winndows/cinder,CloudServer/cinder,nexusriot/cinder,scottdangelo/RemoveVolumeMangerLocks,redhat-openstack/cinder,JioCloud/cinder,Thingee/cinder,Hybrid-Cloud/cinder,cloudbase/cinder,eharney/cinder,saeki-masaki/cinder,NetApp/cinder,hguemar/cinder,github-borat/cinder,Thingee/cinder,winndows/cinder,Paul-Ezell/cinder-1,alex8866/cinder,tlakshman26/cinder-bug-fix-volume-conversion-full,NeCTAR-RC/cinder,saeki-masaki/cinder,spring-week-topos/cinder-week,Datera/cinder,manojhirway/ExistingImagesOnNFS,phenoxim/cinder,Paul-Ezell/cinder-1,NeCTAR-RC/cinder,j-griffith/cinder,Nexenta/cinder,bswartz/cinder,eharney/cinder,petrutlucian94/cinder,tlakshman26/cinder-bug-fix-volume-conversion-full,apporc/cinder,openstack/cinder,abusse/cinder,leilihh/cinder,mahak/cinder,leilihh/cinder,tlakshman26/cinder-https-changes,nexusriot/cinder,scottdangelo/RemoveVolumeMangerLocks,apporc/cinder,tlakshman26/cinder-https-changes,bswartz/cinder,nikesh-mahalka/cinder,takeshineshiro/cinder,abusse/cinder,julianwang/cinder,ge0rgi/cinder,Accelerite/cinder,dims/cinder,takeshineshiro/cinder,alex8866/cinder,dims/cinder