Rollup merge of #148781 - GuillaumeGomez:rm-unneeded-attr, r=yotamofek

[rustdoc] Remove unneeded `allow(rustc::potential_query_instability)`

Originally replaced it with an `expect` and since it failed compilation because it wasn't triggered, I removed it.

src/librustdoc/passes/collect_intra_doc_links.rs

@@ -1215,7 +1215,6 @@ fn validate_link(&self, original_did: DefId) -> bool {
             || !did.is_local()
     }
 
-    #[allow(rustc::potential_query_instability)]
     pub(crate) fn resolve_ambiguities(&mut self) {
         let mut ambiguous_links = mem::take(&mut self.ambiguous_links);
         for ((item_id, path_str), info_items) in ambiguous_links.iter_mut() {