title: How do you delete a remote annotated tag?
body: <p>Suppose I have committed an annotated tag and pushed it.</p>
  
  <ol>
  <li>Can I delete it from the remote (&amp; if so how)?</li>
  <li>What are the safety implications of deleting it - i.e. in what situations will it break stuff?</li>
  <li>Is any of that changed if I have already committed other normal commits after it (are annotated commits leaf nodes or do they have children?).</li>
  </ol>