title: Remove orphan identities in TFS 2010
body: <p>I am in the process of moving a TFS 2010 installation from one machine to another.</p>
  
  <p>I found that is possible remap identities using <code>TFSConfig Identities /change</code> command but I didn't find a way to remove orphan user identities that I don't need anymore.</p>
  
  <p>I know that probably I can leave them there, but I am fussy and I like keeping things in order. Do you have any idea how to safely remove unused identities?</p>