Remove outdated warning in comments.
diff --git a/Objects/listobject.c b/Objects/listobject.c
index c032532..ba44c3d 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -349,9 +349,6 @@
 	return (object *) np;
 }
 
-/* XXX The following function has a bug: don't try assigning a
-   XXX list object to a slice of itself (e.g., a[:1] = a). */
-
 static int
 list_ass_slice(a, ilow, ihigh, v)
 	listobject *a;