[CSS Shapes] Remove some leftover shape-inside code

Source/platform/text/BidiCharacterRun.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2006, 2007, 2008 Apple Inc.  All right 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,
@@ skipping 51 matching lines @@
     bool reversed(bool visuallyOrdered) const { return m_level % 2 && !visuallyOrdered; }
     bool dirOverride(bool visuallyOrdered) { return m_override || visuallyOrdered; }
     TextDirection direction() const { return reversed(false) ? RTL : LTR; }
 
     BidiCharacterRun* next() const { return m_next; }
     void setNext(BidiCharacterRun* next) { m_next = next; }
 
     // Do not add anything apart from bitfields until after m_next. See https://bugs.webkit.org/show_bug.cgi?id=100173
     bool m_override : 1;
     bool m_hasHyphen : 1; // Used by BidiRun subclass which is a layering violation but enables us to save 8 bytes per object on 64-bit.
-    bool m_startsSegment : 1; // Same comment as m_hasHyphen.
     unsigned char m_level;
     BidiCharacterRun* m_next;
     int m_start;
     int m_stop;
 };
 
 } // namespace WebCore
 
 #endif // BidiCharacterRun_h