Remove IC age from Code.

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 abdccc2ebd20de4582032f091b9bfc88dc5f4651..810b38b61edfb89010259fb796950028c2c0d09a 100644
--- a/src/heap/objects-visiting-inl.h
+++ b/src/heap/objects-visiting-inl.h
@@ -262,8 +262,7 @@ void StaticMarkingVisitor<StaticVisitor>::VisitCodeTarget(Heap* heap,
   // when they might be keeping a Context alive, or when the heap is about
   // to be serialized.
   if (FLAG_cleanup_code_caches_at_gc && target->is_inline_cache_stub() &&
-      !target->is_call_stub() && (heap->isolate()->serializer_enabled() ||
-                                  target->ic_age() != heap->global_ic_age())) {
+      !target->is_call_stub() && heap->isolate()->serializer_enabled()) {
     ICUtility::Clear(heap->isolate(), rinfo->pc(),
                      rinfo->host()->constant_pool());
     target = Code::GetCodeFromTargetAddress(rinfo->target_address());