Blimp: move ADSB mavlink handling from vehicles to common library

Blimp/GCS_Mavlink.cpp

@@ -565,12 +565,6 @@ void GCS_MAVLINK_Blimp::handleMessage(const mavlink_message_t &msg)
         break;
     }
 
-    case MAVLINK_MSG_ID_ADSB_VEHICLE:
-    case MAVLINK_MSG_ID_UAVIONIX_ADSB_OUT_CFG:
-    case MAVLINK_MSG_ID_UAVIONIX_ADSB_OUT_DYNAMIC:
-    case MAVLINK_MSG_ID_UAVIONIX_ADSB_TRANSCEIVER_HEALTH_REPORT:
-        break;
-
     default:
         handle_common_message(msg);
         break;