Remove false note about default value.
Remove false note about default value.

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