SW-609: Remove unused reference to qpid in radbbuslistener.py

SAS/ResourceAssignment/ResourceAssignmentDatabase/radbbuslistener.py

@@ -31,7 +31,6 @@ from lofar.messaging.messagebus import AbstractBusListener
 from lofar.sas.resourceassignment.database.config import DEFAULT_NOTIFICATION_BUSNAME, DEFAULT_NOTIFICATION_SUBJECTS
 from lofar.common.util import waitForInterrupt
 
-import qpid.messaging
 import logging
 from datetime import datetime