title: "gcloud auth revoke" doesn't work
body: <p>I need to delete from a machine my Account which has been setted as an Active account in GCLOUD.
  I have tried several time <code>gcloud auth revoke test@gmail.com</code>  but it doesn't do anything, no error, no execution.
  I don't know how to delete my account. I have tried even <code>gcloud auth revoke --all</code> but it doesn't work either.
  Any idea?</p>