Auto merge of #90380 - Mark-Simulacrum:revert-89558-query-stable-lint, r=lcnr

Revert "Add rustc lint, warning when iterating over hashmaps"

Fixes perf regressions introduced in #90235 by temporarily reverting the relevant PR.

Author: bors

compiler/rustc_ast_lowering/src/lib.rs

@@ -35,7 +35,6 @@
 #![feature(iter_zip)]
 #![feature(never_type)]
 #![recursion_limit = "256"]
-#![cfg_attr(not(bootstrap), allow(rustc::potential_query_instability))]
 
 use rustc_ast::token::{self, Token};
 use rustc_ast::tokenstream::{CanSynthesizeMissingTokens, TokenStream, TokenTree};

compiler/rustc_ast_passes/src/lib.rs

@@ -7,7 +7,6 @@
 #![feature(iter_is_partitioned)]
 #![feature(box_patterns)]
 #![recursion_limit = "256"]
-#![cfg_attr(not(bootstrap), allow(rustc::potential_query_instability))]
 
 pub mod ast_validation;
 pub mod feature_gate;