Remove more unused widget styles

xfa/fde/tto/fde_textout.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 "xfa/fde/tto/fde_textout.h"
 
 #include <algorithm>
 
@@ skipping 56 matching lines @@
   m_dwTxtBkStyles = 0;
   if (dwStyles & FDE_TTOSTYLE_SingleLine) {
     m_dwTxtBkStyles |= FX_TXTLAYOUTSTYLE_SingleLine;
   }
   if (dwStyles & FDE_TTOSTYLE_ExpandTab) {
     m_dwTxtBkStyles |= FX_TXTLAYOUTSTYLE_ExpandTab;
   }
   if (dwStyles & FDE_TTOSTYLE_ArabicShapes) {
     m_dwTxtBkStyles |= FX_TXTLAYOUTSTYLE_ArabicShapes;
   }
-  if (dwStyles & FDE_TTOSTYLE_RTL) {
-    m_dwTxtBkStyles |= FX_TXTLAYOUTSTYLE_RTLReadingOrder;
-  }
   if (dwStyles & FDE_TTOSTYLE_ArabicContext) {
     m_dwTxtBkStyles |= FX_TXTLAYOUTSTYLE_ArabicContext;
   }
   if (dwStyles & FDE_TTOSTYLE_VerticalLayout) {
     m_dwTxtBkStyles |=
         (FX_TXTLAYOUTSTYLE_VerticalChars | FX_TXTLAYOUTSTYLE_VerticalLayout);
   }
   m_pTxtBreak->SetLayoutStyles(m_dwTxtBkStyles);
 }
 
@@ skipping 855 matching lines @@
   return m_pieces.GetPtrAt(index);
 }
 
 void CFDE_TTOLine::RemoveLast(int32_t iCount) {
   m_pieces.RemoveLast(iCount);
 }
 
 void CFDE_TTOLine::RemoveAll(bool bLeaveMemory) {
   m_pieces.RemoveAll(bLeaveMemory);
 }