[heap] Remove dead write write barrier counter code

src/heap/spaces.cc

Index: src/heap/spaces.cc
diff --git a/src/heap/spaces.cc b/src/heap/spaces.cc
index 46f4bf225d5d6ed925dc6a9f91ec4e95156ad930..2307532b80979923a7a59fad64e8d5b09d54bd4d 100644
--- a/src/heap/spaces.cc
+++ b/src/heap/spaces.cc
@@ -513,7 +513,6 @@ MemoryChunk* MemoryChunk::Initialize(Heap* heap, Address base, size_t size,
   chunk->typed_old_to_new_slots_.SetValue(nullptr);
   chunk->typed_old_to_old_slots_ = nullptr;
   chunk->skip_list_ = nullptr;
-  chunk->write_barrier_counter_ = kWriteBarrierCounterGranularity;
   chunk->progress_bar_ = 0;
   chunk->high_water_mark_.SetValue(static_cast<intptr_t>(area_start - base));
   chunk->concurrent_sweeping_state().SetValue(kSweepingDone);