code: func (m *wsNotificationManager) UnregisterTxOutAddressRequest(wsc *wsClient, addr string) {
  	m.queueNotification <- &notificationUnregisterAddr{
  		wsc:  wsc,
  		addr: addr,
  	}
  }
docs: // UnregisterTxOutAddressRequest removes a request from the passed websocket
  // client to be notified when a transaction spends to the passed address.