Remove some unused code

Source/core/style/QuotesData.cpp

 /**
  * Copyright (C) 2011 Nokia Inc.  All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #include "config.h"
 #include "core/style/QuotesData.h"
 
 namespace blink {
 
-PassRefPtr<QuotesData> QuotesData::create(String open, String close)
-{
-    RefPtr<QuotesData> data = QuotesData::create();
-    data->addPair(std::make_pair(open, close));
-    return data;
-}
-
 PassRefPtr<QuotesData> QuotesData::create(UChar open1, UChar close1, UChar open2, UChar close2)
 {
     RefPtr<QuotesData> data = QuotesData::create();
     data->addPair(std::make_pair(String(&open1, 1), String(&close1, 1)));
     data->addPair(std::make_pair(String(&open2, 1), String(&close2, 1)));
     return data;
 }
 
 void QuotesData::addPair(std::pair<String, String> quotePair)
 {
@@ skipping 14 matching lines @@
 {
     ASSERT(index >= -1);
     if (!m_quotePairs.size() || index < 0)
         return emptyString();
     if ((size_t)index >= m_quotePairs.size())
         return m_quotePairs.last().second;
     return m_quotePairs.at(index).second;
 }
 
 } // namespace blink