Remove a few unused variables, functions, and tables.

core/src/fxcrt/fx_xml_parser.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 "../../include/fxcrt/fx_xml.h"
 #include "xml_int.h"
 CXML_Parser::~CXML_Parser()
 {
@@ skipping 845 matching lines @@
 CXML_AttrItem& CXML_AttrMap::GetAt(int index) const
 {
     ASSERT(m_pMap != NULL);
     return (*m_pMap)[index];
 }
 void CXML_AttrMap::RemoveAll()
 {
     if (!m_pMap) {
         return;
     }
-    for (int i = 0; i < m_pMap->GetSize(); i ++) {
-        CXML_AttrItem& item = (*m_pMap)[i];
-    }
     m_pMap->RemoveAll();
     delete m_pMap;
     m_pMap = NULL;
 }