Remove unused methods in CPDF_CMap

core/fpdfapi/fpdf_font/fpdf_font_cid.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_font/font_int.h"
 
 #include "core/fpdfapi/fpdf_cmaps/cmap_int.h"
 #include "core/fpdfapi/fpdf_font/ttgsubtable.h"
@@ skipping 500 matching lines @@
   m_pLeadingBytes = nullptr;
   m_pAddMapping = nullptr;
   m_pEmbedMap = nullptr;
   m_nCodeRanges = 0;
 }
 CPDF_CMap::~CPDF_CMap() {
   FX_Free(m_pMapping);
   FX_Free(m_pAddMapping);
   FX_Free(m_pLeadingBytes);
 }
-void CPDF_CMap::Release() {
-  if (m_PredefinedCMap.IsEmpty()) {
-    delete this;
-  }
-}
 
 FX_BOOL CPDF_CMap::IsLoaded() const {
   return m_bLoaded;
 }
 
 FX_BOOL CPDF_CMap::IsVertWriting() const {
   return m_bVertical;
 }
 
 FX_BOOL CPDF_CMap::LoadPredefined(CPDF_CMapManager* pMgr,
@@ skipping 254 matching lines @@
   m_EmbeddedCount = pFontGlobals->m_EmbeddedToUnicodes[charset].m_Count;
 }
 
 CIDSet CharsetFromOrdering(const CFX_ByteStringC& ordering) {
   for (size_t charset = 1; charset < FX_ArraySize(g_CharsetNames); ++charset) {
     if (ordering == g_CharsetNames[charset])
       return CIDSetFromSizeT(charset);
   }
   return CIDSET_UNKNOWN;
 }