Remove unnecessary code for default suffix
Remove unnecessary code for default suffix

The config provides a default value for the suffix, so there's no
need to check if it has a value.

Change-Id: Idd91da39e9b66ef20eea4e9ba157bb383008dff4

klmitch/keystone,jamielennox/keystone,maestro-hybrid-cloud/keystone,dims/keystone,ilay09/keystone,mahak/keystone,ilay09/keystone,roopali8/keystone,mahak/keystone,maestro-hybrid-cloud/keystone,himanshu-setia/keystone,openstack/keystone,mahak/keystone,cernops/keystone,roopali8/keystone,rajalokan/keystone,takeshineshiro/keystone,takeshineshiro/keystone,jamielennox/keystone,dims/keystone,openstack/keystone,idjaw/keystone,idjaw/keystone,himanshu-setia/keystone,openstack/keystone,cernops/keystone,jonnary/keystone,dstanek/keystone,ajayaa/keystone,ajayaa/keystone,dstanek/keystone,klmitch/keystone,ilay09/keystone,rajalokan/keystone,dstanek/keystone,jonnary/keystone,rajalokan/keystone