Bug 1096349 - Remove unused labels in clonejobs directive

This fixes Bugzilla bug [1096349](https://bugzilla.mozilla.org/show_bug.cgi?id=1096349).

Not much to add, except there were a couple of labels to remove.

Tested on Windows:
FF Release **33.1**
Chrome Latest Release **38.0.2125.111 m**

Adding @maurodoglio and @edmorley for merge/review whoever gets to it first.