rados: remove unused variable
rados: remove unused variable

zhouyuan/teuthology,ivotron/teuthology,ivotron/teuthology,SUSE/teuthology,tchaikov/teuthology,ceph/teuthology,robbat2/teuthology,michaelsevilla/teuthology,ktdreyer/teuthology,t-miyamae/teuthology,dmick/teuthology,yghannam/teuthology,ceph/teuthology,dmick/teuthology,SUSE/teuthology,tchaikov/teuthology,caibo2014/teuthology,zhouyuan/teuthology,t-miyamae/teuthology,dreamhost/teuthology,dreamhost/teuthology,ktdreyer/teuthology,robbat2/teuthology,dmick/teuthology,caibo2014/teuthology,michaelsevilla/teuthology,yghannam/teuthology,SUSE/teuthology