[trel] remove Thread LLA on deinit (#6485)
[trel] remove Thread LLA on deinit (#6485)


jwhui/openthread,abtink/openthread,abtink/openthread,openthread/openthread,abtink/openthread,srickardti/openthread,jwhui/openthread,jwhui/openthread,openthread/openthread,openthread/openthread,abtink/openthread,jwhui/openthread,srickardti/openthread,openthread/openthread,srickardti/openthread,srickardti/openthread