Auto merge of rust-lang#94040 - Mark-Simulacrum:destabilize-load-store, r=Amanieu

Destabilize cfg(target_has_atomic_load_store = ...)

This was not intended to be stabilized yet.

This keeps the cfg_target_has_atomic feature gate name since compiler-builtins otherwise depends on it and I'd rather not try to manage a bump across a crates.io published repository given the time-sensitivity here (we need to land this quickly to avoid a beta backport).

Closes rust-lang#32976

r? `@Amanieu`

Author: bors

core/src/lib.rs

@@ -155,7 +155,7 @@
 #![feature(allow_internal_unstable)]
 #![feature(associated_type_bounds)]
 #![feature(auto_traits)]
-#![cfg_attr(bootstrap, feature(cfg_target_has_atomic))]
+#![feature(cfg_target_has_atomic)]
 #![cfg_attr(not(bootstrap), feature(cfg_target_has_atomic_equal_alignment))]
 #![feature(const_fn_floating_point_arithmetic)]
 #![feature(const_fn_fn_ptr_basics)]