Disable OC_SECURE flag in case of SECURED=0 build.

Disable OC_SECURE flag in case of SECURED=0 build.

Change-Id: I53b8a05fc1bc84ea9b32bd8c5c312616b7c3f5c6
Signed-off-by: Chul Lee <chuls.lee@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/8875
Reviewed-by: Ashwini  Kumar <k.ashwini@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Phil Coval <philippe.coval@osg.samsung.com>
Reviewed-by: dongik Lee <dongik.lee@samsung.com>
Reviewed-by: Rick Bell <richard.s.bell@intel.com>
Reviewed-by: Ziran Sun <ziran.sun@samsung.com>