Remove unused variable 'image_member_factory'
Remove unused variable 'image_member_factory'

Fixes LP: #1134465

Change-Id: I99b7f4754646a93f2f6625c50f99585dd8b381ba

dims/glance,wkoathp/glance,takeshineshiro/glance,rajalokan/glance,redhat-openstack/glance,kfwang/Glance-OVA-OVF,klmitch/glance,saeki-masaki/glance,saeki-masaki/glance,JioCloud/glance,tanglei528/glance,ozamiatin/glance,sigmavirus24/glance,dims/glance,klmitch/glance,redhat-openstack/glance,scripnichenko/glance,JioCloud/glance,sigmavirus24/glance,ntt-sic/glance,citrix-openstack-build/glance,rickerc/glance_audit,darren-wang/gl,cloudbau/glance,openstack/glance,scripnichenko/glance,jumpstarter-io/glance,openstack/glance,rickerc/glance_audit,kfwang/Glance-OVA-OVF,takeshineshiro/glance,SUSE-Cloud/glance,citrix-openstack-build/glance,darren-wang/gl,ntt-sic/glance,tanglei528/glance,openstack/glance,stevelle/glance,rajalokan/glance,cloudbau/glance,vuntz/glance,akash1808/glance,vuntz/glance,wkoathp/glance,SUSE-Cloud/glance,paramite/glance,jumpstarter-io/glance,paramite/glance,ozamiatin/glance,akash1808/glance,stevelle/glance