Remove `rustc_allow_const_fn_ptr`

This was a hack to work around the lack of an escape hatch for the "min
`const fn`" checks in const-stable functions. Now that we have co-opted
`allow_internal_unstable` for this purpose, we no longer need the
bespoke attribute.

1 files changed, 0 insertions, 4 deletions

diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs
index 784d6c3b2ce..d5b99ea4d28 100644
--- a/compiler/rustc_middle/src/query/mod.rs
+++ b/compiler/rustc_middle/src/query/mod.rs
@@ -457,10 +457,6 @@ rustc_queries! {
             desc { |tcx| "checking if item is promotable: `{}`", tcx.def_path_str(key) }
         }
 
-        query const_fn_is_allowed_fn_ptr(key: DefId) -> bool {
-            desc { |tcx| "checking if const fn allows `fn()` types: `{}`", tcx.def_path_str(key) }
-        }
-
         /// Returns `true` if this is a foreign item (i.e., linked via `extern { ... }`).
         query is_foreign_item(key: DefId) -> bool {
             desc { |tcx| "checking if `{}` is a foreign item", tcx.def_path_str(key) }