Remove the weak list of array buffers

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index f09e893f081f840e0fc71e7a9be69cc8f51bc706..832baff07c3ac8bf7668a3febfae401c0f72dbc1 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -10255,9 +10255,6 @@ class JSArrayBuffer: public JSObject {
   inline bool was_neutered();
   inline void set_was_neutered(bool value);
 
-  // [weak_next]: linked list of array buffers.
-  DECL_ACCESSORS(weak_next, Object)
-
   DECLARE_CAST(JSArrayBuffer)
 
   void Neuter();
@@ -10269,8 +10266,7 @@ class JSArrayBuffer: public JSObject {
   static const int kBackingStoreOffset = JSObject::kHeaderSize;
   static const int kByteLengthOffset = kBackingStoreOffset + kPointerSize;
   static const int kBitFieldOffset = kByteLengthOffset + kPointerSize;
-  static const int kWeakNextOffset = kBitFieldOffset + kPointerSize;
-  static const int kSize = kWeakNextOffset + kPointerSize;
+  static const int kSize = kBitFieldOffset + kPointerSize;
 
   static const int kSizeWithInternalFields =
       kSize + v8::ArrayBuffer::kInternalFieldCount * kPointerSize;