Remove now-incorrect DataView accessor optimization

src/accessors.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_ACCESSORS_H_
 #define V8_ACCESSORS_H_
 
 #include "include/v8.h"
 #include "src/allocation.h"
 #include "src/globals.h"
@@ skipping 77 matching lines @@
 
   // Accessor infos.
   static Handle<AccessorInfo> MakeModuleExport(
       Handle<String> name, int index, PropertyAttributes attributes);
 
   // Returns true for properties that are accessors to object fields.
   // If true, *object_offset contains offset of object field.
   static bool IsJSObjectFieldAccessor(Handle<Map> map, Handle<Name> name,
                                       int* object_offset);
 
-  // Returns true for properties that are accessors to ArrayBufferView and
-  // derived classes fields. If true, *object_offset contains offset of
-  // object field. The caller still has to check whether the underlying
-  // buffer was neutered.
-  static bool IsJSArrayBufferViewFieldAccessor(Handle<Map> map,
-                                               Handle<Name> name,
-                                               int* object_offset);
-
   static Handle<AccessorInfo> MakeAccessor(
       Isolate* isolate,
       Handle<Name> name,
       AccessorNameGetterCallback getter,
       AccessorNameSetterCallback setter,
       PropertyAttributes attributes);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ACCESSORS_H_