--- utils/thread_util.c
+++ utils/thread_util.c
@@ -718,12 +718,6 @@ void *io_thread_create(struct io_thread *self, void *parent, void *(*start_routi
 		pthread_attr_t attr;
 		pthread_attr_t *attr_ptr = NULL;
 
-#   if (defined __APPLE__ && defined __MACH__)
-		/* For Apple silicon. Requires macOS 10.10 or iOS 8.0. */
-		attr_ptr = &attr;
-		pthread_attr_set_qos_class_np(attr_ptr, QOS_CLASS_USER_INTERACTIVE, 0);
-#   endif
-
 		if(stacksize)
 		{
 			attr_ptr = &attr;