Boot into clockwork, Then scroll to backup/restore and you see a delete option inside. So it has to be done through clockwork.
Sent from my Galaxy Nexus using xda premium
http://forum.xda-developers.com/archive/index.php/t-1699914.html "look at last post". This maybe it might help. As for your thread been deleted,???
Sent from my HTC One X using xda premium
Tried earlier here in dublin. Nothing.
Sent from my Desire HD, ARHD 5.1.3.