Auto merge of #97239 - jhpratt:remove-crate-vis, r=joshtriplett

Remove `crate` visibility modifier

FCP to remove this syntax is just about complete in #53120. Once it completes, this should be merged ASAP to avoid merge conflicts.

The first two commits remove usage of the feature in this repository, while the last removes the feature itself.

Author: bors

compiler/rustc_ast/src/attr/mod.rs

@@ -340,7 +340,7 @@ pub fn mk_nested_word_item(ident: Ident) -> NestedMetaItem {
     NestedMetaItem::MetaItem(mk_word_item(ident))
 }
 
-crate fn mk_attr_id() -> AttrId {
+pub(crate) fn mk_attr_id() -> AttrId {
     use std::sync::atomic::AtomicU32;
     use std::sync::atomic::Ordering;
 

compiler/rustc_ast/src/lib.rs

@@ -12,7 +12,6 @@
 #![feature(box_patterns)]
 #![feature(const_default_impls)]
 #![feature(const_trait_impl)]
-#![feature(crate_visibility_modifier)]
 #![feature(if_let_guard)]
 #![feature(label_break_value)]
 #![feature(let_chains)]