Remove FPDFAPI_LoadCID2UnicodeMap.

core/fpdfapi/fpdf_cmaps/fpdf_cmaps.cpp

 // 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 "core/fpdfapi/fpdf_cmaps/cmap_int.h"
 
 #include "core/fpdfapi/fpdf_font/font_int.h"
 #include "core/fpdfapi/fpdf_page/cpdf_pagemodule.h"
@@ skipping 162 matching lines @@
         pCur += 3;
       }
     }
     if (pMap->m_UseOffset == 0) {
       return 0;
     }
     pMap = pMap + pMap->m_UseOffset;
   }
   return 0;
 }
-
-void FPDFAPI_LoadCID2UnicodeMap(CIDSet charset,
-                                const uint16_t*& pMap,
-                                uint32_t& count) {
-  CPDF_FontGlobals* pFontGlobals =
-      CPDF_ModuleMgr::Get()->GetPageModule()->GetFontGlobals();
-  pMap = pFontGlobals->m_EmbeddedToUnicodes[charset].m_pMap;
-  count = pFontGlobals->m_EmbeddedToUnicodes[charset].m_Count;
-}