Remove unused methods about Node::class_id_

src/global-handles.cc

Index: src/global-handles.cc
diff --git a/src/global-handles.cc b/src/global-handles.cc
index 3f4e3bea59d5fb8d96e9435d3dbb0f6932ffd532..94ccc287368880b2b30ead67d949183c2e4c93dc 100644
--- a/src/global-handles.cc
+++ b/src/global-handles.cc
@@ -129,7 +129,6 @@ class GlobalHandles::Node {
   }
 
   uint16_t wrapper_class_id() const { return class_id_; }
-  void set_wrapper_class_id(uint16_t class_id) { class_id_ = class_id; }
 
   // State and flag accessors.
 
@@ -508,14 +507,6 @@ bool GlobalHandles::IsWeak(Object** location) {
 }
 
 
-void GlobalHandles::SetWrapperClassId(Object** location, uint16_t class_id) {
-  Node::FromLocation(location)->set_wrapper_class_id(class_id);
-}
-
-uint16_t GlobalHandles::GetWrapperClassId(Object** location) {
-  return Node::FromLocation(location)->wrapper_class_id();
-}
-
 void GlobalHandles::IterateWeakRoots(ObjectVisitor* v) {
   for (NodeIterator it(this); !it.done(); it.Advance()) {
     if (it.node()->IsWeakRetainer()) v->VisitPointer(it.node()->location());