Hotfix for USB: Starting MAVLink only on USB if connected. Needs rewrite of MAVLink and delay / retries for correct approach

src/modules/mavlink/mavlink.c

@@ -516,7 +516,6 @@ void mavlink_update_system(void)
 int mavlink_thread_main(int argc, char *argv[])
 {
 	/* initialize mavlink text message buffering */
-	usleep(1000);
 	mavlink_logbuffer_init(&lb, 10);
 
 	int ch;