Remove custom memory manager

core/src/fxcrt/fx_basic_utf.cpp

Index: core/src/fxcrt/fx_basic_utf.cpp
diff --git a/core/src/fxcrt/fx_basic_utf.cpp b/core/src/fxcrt/fx_basic_utf.cpp
index c5aa360e6cc116f6eb0479691ff7da5a910366db..02c7d98a1bea8f98b77b74a4db8755cd3e161f54 100644
--- a/core/src/fxcrt/fx_basic_utf.cpp
+++ b/core/src/fxcrt/fx_basic_utf.cpp
@@ -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
 
 #include "../../include/fxcrt/fx_basic.h"
@@ -88,15 +88,3 @@ CFX_ByteString FX_UTF8Encode(FX_LPCWSTR pwsStr, FX_STRSIZE len)
     }
     return encoder.GetResult();
 }
-void FX_UTF8Encode(FX_LPCWSTR pwsStr, FX_STRSIZE len, CFX_ByteStringL &utf8Str, IFX_Allocator* pAllocator)
-{
-    FXSYS_assert(pwsStr != NULL);
-    if (len < 0) {
-        len = (FX_STRSIZE)FXSYS_wcslen(pwsStr);
-    }
-    CFX_UTF8Encoder encoder(pAllocator);
-    while (len -- > 0) {
-        encoder.Input(*pwsStr ++);
-    }
-    encoder.GetResult(utf8Str);
-}