Remove custom memory manager

core/src/fxcrt/plex.h

Index: core/src/fxcrt/plex.h
diff --git a/core/src/fxcrt/plex.h b/core/src/fxcrt/plex.h
index e982fd67a49715d2e0df3c2c1e392465822d3b15..f8f01948e551c81e303bc2442bd8813e1dcd779c 100644
--- a/core/src/fxcrt/plex.h
+++ b/core/src/fxcrt/plex.h
@@ -1,7 +1,7 @@
 // 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
 
 struct CFX_Plex {
@@ -10,6 +10,6 @@ struct CFX_Plex {
     {
         return this + 1;
     }
-    static CFX_Plex* Create(IFX_Allocator* pAllocator, CFX_Plex*& head, FX_DWORD nMax, FX_DWORD cbElement);
-    void FreeDataChain(IFX_Allocator* pAllocator);
+    static CFX_Plex* Create(CFX_Plex*& head, FX_DWORD nMax, FX_DWORD cbElement);
+    void FreeDataChain();
 };