Clean up lang_items::extract

Noted in https://github.com/rust-lang/rust/pull/87739#pullrequestreview-740497194,
lang_items::extract no longer needs to take a closure.

compiler/rustc_hir/src/weak_lang_items.rs

@@ -18,13 +18,9 @@ pub static WEAK_ITEMS_REFS: SyncLazy<StableMap<Symbol, LangItem>> = SyncLazy::ne
     map
 });
 
-/// The `check_name` argument avoids the need for `rustc_hir` to depend on
-/// `rustc_session`.
-pub fn link_name<'a, F>(check_name: F, attrs: &'a [ast::Attribute]) -> Option<Symbol>
-where
-    F: Fn(&'a ast::Attribute, Symbol) -> bool
+pub fn link_name(attrs: &[ast::Attribute]) -> Option<Symbol>
 {
-    lang_items::extract(check_name, attrs).and_then(|(name, _)| {
+    lang_items::extract(attrs).and_then(|(name, _)| {
         $(if name == sym::$name {
             Some(sym::$sym)
         } else)* {