Auto merge of #87462 - ibraheemdev:tidy-file-length-ignore-comment, r=Mark-Simulacrum

Ignore comments in tidy-filelength

Ref https://github.com/rust-lang/rust/issues/60302#issuecomment-652402127

compiler/rustc_hir/src/hir.rs

@@ -1,4 +1,3 @@
-// ignore-tidy-filelength
 use crate::def::{CtorKind, DefKind, Res};
 use crate::def_id::{DefId, CRATE_DEF_ID};
 crate use crate::hir_id::{HirId, ItemLocalId};