ASACORE-1138 Call aboutObj.cancelAnnouncement

The Garbage collector is collecting the aboutObj because it does not
know that it is still needed.

This is a workaround to prevent the GC from collecting the aboutObj
this change should make the tests pass on the systems that are
not passing for the time being.

Change-Id: Ic46779ce9674ad0d59c6cda6aaf02ddabc1be4d8
Signed-off-by: George Nash <georgen@qce.qualcomm.com>
Merge "ASACORE-1138 Call aboutObj.cancelAnnouncement"