Move prototype metadata from internal properties to prototype maps

src/heap/objects-visiting-inl.h

Index: src/heap/objects-visiting-inl.h
diff --git a/src/heap/objects-visiting-inl.h b/src/heap/objects-visiting-inl.h
index 872b2dd30c814da322199aa643ad5fe17cbceee2..010bbfa1e5107be4b075124f894ff66645784c03 100644
--- a/src/heap/objects-visiting-inl.h
+++ b/src/heap/objects-visiting-inl.h
@@ -585,10 +585,6 @@ template <typename StaticVisitor>
 void StaticMarkingVisitor<StaticVisitor>::MarkMapContents(Heap* heap,
                                                           Map* map) {
   Object* raw_transitions = map->raw_transitions();
-  if (TransitionArray::IsSimpleTransition(raw_transitions)) {
-    StaticVisitor::VisitPointer(
-        heap, HeapObject::RawField(map, Map::kTransitionsOffset));
-  }
   if (TransitionArray::IsFullTransitionArray(raw_transitions)) {
     MarkTransitionArray(heap, TransitionArray::cast(raw_transitions));
   }