revert const_type_id stabilization

This reverts commit e385661.

Author: KodrAus

core/src/any.rs

@@ -435,7 +435,7 @@ impl TypeId {
     /// assert_eq!(is_string(&"cookie monster".to_string()), true);
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
-    #[rustc_const_stable(feature = "const_type_id", since = "1.46.0")]
+    #[rustc_const_unstable(feature = "const_type_id", issue = "63084")]
     pub const fn of<T: ?Sized + 'static>() -> TypeId {
         TypeId { t: intrinsics::type_id::<T>() }
     }

core/src/intrinsics.rs

@@ -807,7 +807,7 @@ extern "rust-intrinsic" {
     /// crate it is invoked in.
     ///
     /// The stabilized version of this intrinsic is [`crate::any::TypeId::of`].
-    #[rustc_const_stable(feature = "const_type_id", since = "1.46.0")]
+    #[rustc_const_unstable(feature = "const_type_id", issue = "63084")]
     pub fn type_id<T: ?Sized + 'static>() -> u64;
 
     /// A guard for unsafe functions that cannot ever be executed if `T` is uninhabited:

core/src/lib.rs

@@ -90,6 +90,7 @@
 #![feature(const_slice_ptr_len)]
 #![feature(const_size_of_val)]
 #![feature(const_align_of_val)]
+#![feature(const_type_id)]
 #![feature(const_type_name)]
 #![feature(const_likely)]
 #![feature(const_unreachable_unchecked)]