servo: Merge #15403 - Remove a gate for the stabilized more_struct_aliases feature (from servo:warnings); r=SimonSapin

Source-Repo: https://github.com/servo/servo
Source-Revision: fb4f421c8b9cbf80a86c9c5eb88395d7008b27a1

--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : c8b96506503e46f82f75c66be3ff48245ea1ea39

servo/components/script/lib.rs

@@ -7,7 +7,6 @@
 #![feature(const_fn)]
 #![feature(core_intrinsics)]
 #![feature(field_init_shorthand)]
-#![feature(more_struct_aliases)]
 #![feature(mpsc_select)]
 #![feature(nonzero)]
 #![feature(on_unimplemented)]