[heap] Simplify adjusting of live bytes.

src/runtime/runtime-regexp.cc

Index: src/runtime/runtime-regexp.cc
diff --git a/src/runtime/runtime-regexp.cc b/src/runtime/runtime-regexp.cc
index d572eedd31c6971b9f6fc45592a107dfa2a2e468..ccdbea4b96f67ae41aa880f7b3da9932200f364d 100644
--- a/src/runtime/runtime-regexp.cc
+++ b/src/runtime/runtime-regexp.cc
@@ -652,7 +652,7 @@ MUST_USE_RESULT static Object* StringReplaceGlobalRegExpWithEmptyString(
   if (!heap->lo_space()->Contains(*answer)) {
     heap->CreateFillerObjectAt(end_of_string, delta, ClearRecordedSlots::kNo);
   }
-  heap->AdjustLiveBytes(*answer, -delta, Heap::CONCURRENT_TO_SWEEPER);
+  heap->AdjustLiveBytes(*answer, -delta);
   return *answer;
 }