Remove dead code found by Scythe.

core/src/fpdftext/text_int.h

 // 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
 
 #ifndef CORE_SRC_FPDFTEXT_TEXT_INT_H_
 #define CORE_SRC_FPDFTEXT_TEXT_INT_H_
 
-class CPDF_TextParseOptions
-{
-public:
-    CPDF_TextParseOptions();
-    FX_BOOL                     m_bCheckObjectOrder;
-    FX_BOOL                     m_bCheckDirection;
-    int                         m_nCheckSameObject;
-};
 class CPDF_TextPage;
 class CPDF_LinkExtract;
 class CPDF_TextPageFind;
 class CPDF_DocProgressiveSearch;
 #define FPDFTEXT_CHAR_ERROR                     -1
 #define FPDFTEXT_CHAR_NORMAL            0
 #define FPDFTEXT_CHAR_GENERATED         1
 #define FPDFTEXT_CHAR_UNUNICODE         2
 #define FPDFTEXT_CHAR_HYPHEN            3
 #define FPDFTEXT_CHAR_PIECE                     4
@@ skipping 185 matching lines @@
     LINK_InfoArray                                      m_LinkList;
     const CPDF_TextPage*                        m_pTextPage;
     CFX_WideString                                      m_strPageText;
     FX_BOOL                                                     m_IsParserd;
 };
 FX_STRSIZE FX_Unicode_GetNormalization(FX_WCHAR wch, FX_WCHAR* pDst);
 void NormalizeString(CFX_WideString& str);
 void NormalizeCompositeChar(FX_WCHAR wChar, CFX_WideString& sDest);
 
 #endif  // CORE_SRC_FPDFTEXT_TEXT_INT_H_