Removes a redundant test
Removes a redundant test

I mistakenly asked for the test to be added in a review because I
thought there was some LDAP specific behavior. It turns out that this is
just a copy of the test in the parent class.

Change-Id: I98e007a1a40e64a18692623f80b7d733075c63c2

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