Removing a bunch of unused platform code.

Source/WebCore/platform/graphics/WidthIterator.h

 /*
  * Copyright (C) 2003, 2006, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Holger Hans Peter Freyther
  *
  * 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 48 matching lines @@
     Vector<SVGGlyph::ArabicForm>& arabicForms() { return m_arabicForms; }
 #endif
 
     static bool supportsTypesettingFeatures(const Font& font)
     {
 #if PLATFORM(MAC) && __MAC_OS_X_VERSION_MIN_REQUIRED > 1080
         if (!font.isPrinterFont())
             return !font.typesettingFeatures();
 
         return !(font.typesettingFeatures() & ~(Kerning | Ligatures));
-#elif PLATFORM(QT) && QT_VERSION >= 0x050100
-        return !(font.typesettingFeatures() & ~Kerning) && !font.isSmallCaps();
 #else
         return !font.typesettingFeatures();
 #endif
     }
 
     const Font* m_font;
 
     const TextRun& m_run;
 
     unsigned m_currentCharacter;
@@ skipping 21 matching lines @@
     float m_maxGlyphBoundingBoxY;
     float m_minGlyphBoundingBoxY;
     float m_firstGlyphOverflow;
     float m_lastGlyphOverflow;
     bool m_forTextEmphasis;
 };
 
 }
 
 #endif