[tidy] cleanup commented out code

Change-Id: Ie233f093377bcdbab95a2f34b6c609a651f9db62
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1787980
Auto-Submit: Joshua Litt <joshualitt@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63833}

src/objects/js-regexp-inl.h

@@ -19,11 +19,9 @@ namespace v8 {
 namespace internal {
 
 TQ_OBJECT_CONSTRUCTORS_IMPL(JSRegExp)
-// TQ_OBJECT_CONSTRUCTORS_IMPL(JSRegExpResult, JSArray)
 OBJECT_CONSTRUCTORS_IMPL(JSRegExpResult, JSArray)
 OBJECT_CONSTRUCTORS_IMPL(JSRegExpResultIndices, JSArray)
 
-// CAST_ACCESSOR(JSRegExp)
 CAST_ACCESSOR(JSRegExpResult)
 CAST_ACCESSOR(JSRegExpResultIndices)