Fixed "[IOT-471] CATerminate can not clear out the previously registered handlers...

Fixed "[IOT-471] CATerminate can not clear out the previously registered handlers" issue.

Change-Id: Iffd86c2f3c24e210af4b9c33da48032cb421b4bc
Signed-off-by: vimala.v <vimala.v@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/768
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Abhishek Pandey <abhi.siso@samsung.com>
Reviewed-by: jihwan seo <jihwan.seo@samsung.com>
Reviewed-by: Patrick Lankswert <patrick.lankswert@intel.com>