Removing unused imports.
Removing unused imports.

cbrucks/Federated_Keystone,cloudbau/keystone,cloudbau/keystone,citrix-openstack-build/keystone,dstanek/keystone,ilay09/keystone,openstack/keystone,jamielennox/keystone,pvo/keystone,dsiddharth/access-keys,nuxeh/keystone,cbrucks/Federated_Keystone,rajalokan/keystone,juvvadi/keystone,citrix-openstack-build/keystone,openstack/keystone,cernops/keystone,mahak/keystone,roopali8/keystone,promptworks/keystone,dstanek/keystone,kwss/keystone,JioCloud/keystone,rajalokan/keystone,cbrucks/keystone_ldap,idjaw/keystone,cbrucks/Federated_Keystone,ntt-pf-lab/backup_keystone,jumpstarter-io/keystone,blueboxgroup/keystone,savi-dev/keystone,dsiddharth/access-keys,promptworks/keystone,jonnary/keystone,UTSA-ICS/keystone-kerberos,ntt-pf-lab/backup_keystone,MaheshIBM/keystone,promptworks/keystone,sileht/deb-openstack-keystone,admiyo/keystone,rushiagr/keystone,townbull/keystone-dtrust,nuxeh/keystone,ajayaa/keystone,derekchiang/keystone,pvo/keystone,kwss/keystone,admiyo/keystone,savi-dev/keystone,citrix-openstack-build/keystone,nuxeh/keystone,savi-dev/keystone,ilay09/keystone,ntt-sic/keystone,vivekdhayaal/keystone,maestro-hybrid-cloud/keystone,reeshupatel/demo,jumpstarter-io/keystone,rushiagr/keystone,roopali8/keystone,jumpstarter-io/keystone,townbull/keystone-dtrust,admiyo/keystone,rajalokan/keystone,klmitch/keystone,cloudbau/keystone,rickerc/keystone_audit,mahak/keystone,ilay09/keystone,maestro-hybrid-cloud/keystone,sileht/deb-openstack-keystone,ajayaa/keystone,klmitch/keystone,derekchiang/keystone,vivekdhayaal/keystone,jonnary/keystone,kwss/keystone,idjaw/keystone,himanshu-setia/keystone,rodrigods/keystone,ging/keystone,cbrucks/keystone_ldap,mahak/keystone,cernops/keystone,JioCloud/keystone,blueboxgroup/keystone,UTSA-ICS/keystone-kerberos,ntt-sic/keystone,himanshu-setia/keystone,townbull/keystone-dtrust,derekchiang/keystone,pvo/keystone,rickerc/keystone_audit,dims/keystone,ntt-sic/keystone,sileht/deb-openstack-keystone,MaheshIBM/keystone,ging/keystone,reeshupatel/demo,jamielennox/keystone,takeshineshiro/keystone,rickerc/keystone_audit,dsiddharth/access-keys,rushiagr/keystone,dstanek/keystone,openstack/keystone,reeshupatel/demo,ntt-pf-lab/backup_keystone,cbrucks/keystone_ldap,rodrigods/keystone,vivekdhayaal/keystone,dims/keystone,takeshineshiro/keystone