Sub: move sending of meminfo up

ArduSub/GCS_Mavlink.cpp

@@ -455,11 +455,6 @@ bool GCS_MAVLINK_Sub::try_send_message(enum ap_message id)
         }
         break;
 
-    case MSG_EXTENDED_STATUS2:
-        CHECK_PAYLOAD_SIZE(MEMINFO);
-        send_meminfo();
-        break;
-
     case MSG_ATTITUDE:
         CHECK_PAYLOAD_SIZE(ATTITUDE);
         sub.send_attitude(chan);