Stabilize feature const_ordering

Author: CDirkx

library/core/src/cmp.rs

@@ -356,7 +356,7 @@ impl Ordering {
     /// ```
     #[inline]
     #[must_use]
-    #[rustc_const_unstable(feature = "const_ordering", issue = "76113")]
+    #[rustc_const_stable(feature = "const_ordering", since = "1.47.0")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub const fn reverse(self) -> Ordering {
         match self {
@@ -395,7 +395,7 @@ impl Ordering {
     /// ```
     #[inline]
     #[must_use]
-    #[rustc_const_unstable(feature = "const_ordering", issue = "76113")]
+    #[rustc_const_stable(feature = "const_ordering", since = "1.47.0")]
     #[stable(feature = "ordering_chaining", since = "1.17.0")]
     pub const fn then(self, other: Ordering) -> Ordering {
         match self {

library/core/src/lib.rs

@@ -86,7 +86,6 @@
 #![feature(const_ptr_offset_from)]
 #![feature(const_raw_ptr_comparison)]
 #![feature(const_result)]
-#![feature(const_ordering)]
 #![feature(const_slice_from_raw_parts)]
 #![feature(const_slice_ptr_len)]
 #![feature(const_size_of_val)]

src/test/ui/consts/const-ordering.rs

@@ -1,7 +1,5 @@
 // run-pass
 
-#![feature(const_ordering)]
-
 use std::cmp::Ordering;
 
 // the following methods of core::cmp::Ordering are const: