title: delete an object from git by hash
body: <p>Say I do <code>echo hello | git hash-object --stdin -w</code>. Now I've got this object in the working area.</p>
  
  <p>I know I can go to <code>.git/objects</code> folder, find the object and simply delete it. I also can do <code>git prune</code>, which I am a little scared of.</p>
  
  <p>Is there any way through git command to delete a single object by hash?. Something like:</p>
  
  <pre><code>$ echo hello | git hash-object --stdin -w
  ce013625030ba8dba906f756967f9e9ca394464a
  $ git remove-object-by-hash ce013625030ba8dba906f756967f9e9ca394464a    # &lt;- something like this
  </code></pre>