disable BLE send logic related multicast

disable BLE send logic related multicast

since BLE has limited policy which can't be connected with 8 times device,
there are many issue related pending thread in multicast scenario.
and there is no spec related multicast in BLE spec.
Thru, multicast will be not supported until get specific comment
from BLE spec.

ps. tizen ble will be disabled when tizen 3.0 ble is updated

Change-Id: Id278f17299fa9b128bb73718257cf2b0e5e90ea9
Signed-off-by: jihwan.seo <jihwan.seo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/14937
Reviewed-by: Larry Sachs <larry.j.sachs@intel.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Dan Mihai <Daniel.Mihai@microsoft.com>
Reviewed-by: Abhishek Sharma <ce.abhishek@samsung.com>
Reviewed-by: Jaehong Jo <jaehong.jo@samsung.com>
Reviewed-by: Ashok Babu Channa <ashok.channa@samsung.com>