Move methods from Map to TyCtxt, part 2.

Continuing the work started in #136466.

Every method gains a `hir_` prefix, though for the ones that already
have a `par_` or `try_par_` prefix I added the `hir_` after that.

compiler/rustc_lint/src/levels.rs

@@ -144,7 +144,7 @@ fn lints_that_dont_need_to_run(tcx: TyCtxt<'_>, (): ()) -> FxIndexSet<LintId> {
 
     let mut visitor = LintLevelMaximum { tcx, dont_need_to_run };
     visitor.process_opts();
-    tcx.hir().walk_attributes(&mut visitor);
+    tcx.hir_walk_attributes(&mut visitor);
 
     visitor.dont_need_to_run
 }