ASACORE47: Remove code to unregister signal handler 

ASACORE47: Remove code to unregister signal handler that is not 
           registered in the first place

Change-Id: I0815cfd3ff46a15bfb12a4926f96a2d55e1cf37e
Signed-off-by: Steve Kinneberg <stevek@qce.qualcomm.com>