Remove CFX_Deletable

core/fxcrt/include/fx_memory.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_FXCRT_INCLUDE_FX_MEMORY_H_
 #define CORE_FXCRT_INCLUDE_FX_MEMORY_H_
 
 #include "core/fxcrt/include/fx_system.h"
@@ skipping 89 matching lines @@
 struct ReleaseDeleter {
   inline void operator()(T* ptr) const { ptr->Release(); }
 };
 
 // Used to help transfer ownership of a raw pointer to std::unique_ptr.
 template <typename T>
 std::unique_ptr<T> WrapUnique(T* ptr) {
   return std::unique_ptr<T>(ptr);
 }
 
-class CFX_Deletable {
- public:
-  virtual ~CFX_Deletable() {}
-};
-
 #endif  // __cplusplus
 
 #endif  // CORE_FXCRT_INCLUDE_FX_MEMORY_H_