Remove duplicated headers from core/

Source/core/page/SpatialNavigation.cpp

 /*
  * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Antonio Gomes <tonikitoo@webkit.org>
  *
  * 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
@@ skipping 12 matching lines @@
  * 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/page/SpatialNavigation.h"
 
 #include "HTMLNames.h"
-#include "core/dom/Node.h"
 #include "core/html/HTMLAreaElement.h"
 #include "core/html/HTMLImageElement.h"
 #include "core/frame/Frame.h"
 #include "core/page/FrameTree.h"
 #include "core/frame/FrameView.h"
 #include "core/page/Page.h"
 #include "core/page/Settings.h"
 #include "core/rendering/RenderLayer.h"
 #include "platform/geometry/IntRect.h"
 
@@ skipping 686 matching lines @@
     LayoutRect rect = virtualRectForDirection(direction, rectToAbsoluteCoordinates(area->document().frame(), area->computeRect(area->imageElement()->renderer())), 1);
     return rect;
 }
 
 HTMLFrameOwnerElement* frameOwnerElement(FocusCandidate& candidate)
 {
     return candidate.isFrameOwnerElement() ? toHTMLFrameOwnerElement(candidate.visibleNode) : 0;
 };
 
 } // namespace WebCore