remove out of date docs for Fedora 15
remove out of date docs for Fedora 15

Fedora 20 is the current version.

Change-Id: I7624c79625a180b9424ec1114d1ad011cc32756f

dims/keystone,rajalokan/keystone,vivekdhayaal/keystone,jamielennox/keystone,rushiagr/keystone,cernops/keystone,roopali8/keystone,promptworks/keystone,jumpstarter-io/keystone,jumpstarter-io/keystone,reeshupatel/demo,himanshu-setia/keystone,rajalokan/keystone,nuxeh/keystone,ajayaa/keystone,vivekdhayaal/keystone,UTSA-ICS/keystone-kerberos,UTSA-ICS/keystone-kerberos,idjaw/keystone,mahak/keystone,roopali8/keystone,dstanek/keystone,promptworks/keystone,jumpstarter-io/keystone,blueboxgroup/keystone,openstack/keystone,mahak/keystone,vivekdhayaal/keystone,nuxeh/keystone,jonnary/keystone,takeshineshiro/keystone,cernops/keystone,openstack/keystone,klmitch/keystone,klmitch/keystone,rajalokan/keystone,idjaw/keystone,rushiagr/keystone,openstack/keystone,rushiagr/keystone,blueboxgroup/keystone,MaheshIBM/keystone,dstanek/keystone,maestro-hybrid-cloud/keystone,himanshu-setia/keystone,rodrigods/keystone,ajayaa/keystone,ilay09/keystone,ging/keystone,MaheshIBM/keystone,promptworks/keystone,ging/keystone,dims/keystone,jamielennox/keystone,reeshupatel/demo,ilay09/keystone,jonnary/keystone,reeshupatel/demo,ilay09/keystone,maestro-hybrid-cloud/keystone,nuxeh/keystone,takeshineshiro/keystone,rodrigods/keystone,mahak/keystone,dstanek/keystone