correct syntax errors in core scripts

source/scheduler.c

@@ -310,7 +310,6 @@ void actor_free(cell_rt *actor)
 
   int actor_count = lockless_shlen(actors);
   if (actor_count == 0) {
-    fprintf(stderr, "all actors are dead\n");
     pthread_mutex_lock(&engine.lock);
     engine.shutting_down = 1;
     pthread_cond_broadcast(&engine.wake_cond);