message: core: remove hack ignoring QGC's messages
  Since we removed the check for several sysids behind one IP:port we
  should now be able to remove this hack. Let's see...
diff: @@ -238,8 +238,7 @@ void UdpConnection::receive()
  while (_mavlink_receiver->parse_message()) {
  const uint8_t sysid = _mavlink_receiver->get_last_message().sysid;
  - // FIXME: We ignore messages from QGC (255) for now.
  - if (!saved_remote && sysid != 0 && sysid != 255) {
  + if (!saved_remote && sysid != 0) {
  saved_remote = true;
  {
  std::lock_guard<std::mutex> lock(_remote_mutex);
  