Catch exception if job already removed from unassignedJob queue (#207)
Catch exception if job already removed from unassignedJob queue (#207)

* Catch exception if job already removed from unassignedJob queue

* Only remove jobs from unassignedQueue in delJob as other callsites guarantee job must be assigned
cg2v/Tango,autolab/Tango,autolab/Tango,cg2v/Tango,autolab/Tango,cg2v/Tango