Remove duplicated headers from core/

Source/core/platform/graphics/GlyphPageTreeNode.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 18 matching lines @@
 #include "config.h"
 #include "core/platform/graphics/GlyphPageTreeNode.h"
 
 #include <stdio.h>
 #include "core/platform/graphics/SegmentedFontData.h"
 #include "core/platform/graphics/SimpleFontData.h"
 #include "core/platform/graphics/opentype/OpenTypeVerticalData.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/WTFString.h"
 #include "wtf/unicode/CharacterNames.h"
-#include "wtf/unicode/Unicode.h"
 
 namespace WebCore {
 
 using std::max;
 using std::min;
 
 HashMap<int, GlyphPageTreeNode*>* GlyphPageTreeNode::roots = 0;
 GlyphPageTreeNode* GlyphPageTreeNode::pageZeroRoot = 0;
 
 GlyphPageTreeNode* GlyphPageTreeNode::getRoot(unsigned pageNumber)
@@ skipping 379 matching lines @@
         printf("\nPage %d:\n", it->key);
         showGlyphPageTree(it->key);
     }
 }
 
 void showGlyphPageTree(unsigned pageNumber)
 {
     WebCore::GlyphPageTreeNode::getRoot(pageNumber)->showSubtree();
 }
 #endif