Remove unused includes from various .cpp files in core/

Source/core/xml/XPathPredicate.cpp

 /*
  * Copyright 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  *
  * 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
@@ skipping 11 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/xml/XPathPredicate.h"
 
 #include <math.h>
-#include "core/dom/Node.h"
 #include "core/xml/XPathFunctions.h"
 #include "core/xml/XPathUtil.h"
 #include "core/xml/XPathValue.h"
 #include <wtf/MathExtras.h>
 
 namespace WebCore {
 namespace XPath {
         
 Number::Number(double value)
     : m_value(value)
@@ skipping 225 matching lines @@
 
     // foo[3] means foo[position()=3]
     if (result.isNumber())
         return EqTestOp(EqTestOp::OP_EQ, createFunction("position"), new Number(result.toNumber())).evaluate().toBoolean();
 
     return result.toBoolean();
 }
 
 }
 }