Remove unused method
Remove unused method

There's no usage for this method, so no need for it to be in the code
base.

Change-Id: Ibd1823b9f97ad52f55d0aa7cc883b1786749985c
Signed-off-by: Mike Kolesnik <c6947eedc1b0e500810c3b3db45e5f4633b0ea7d@redhat.com>

openstack/networking-odl,openstack/networking-odl,openstack/networking-odl