Remove unused includes from core/accessibility, core/css and core/dom

Source/core/dom/EventTarget.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  *           (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  *
  */
 
 #ifndef EventTarget_h
 #define EventTarget_h
 
 #include "core/dom/EventListenerMap.h"
 #include "core/dom/EventNames.h"
-#include <wtf/Forward.h>
-#include <wtf/HashMap.h>
-#include <wtf/text/AtomicStringHash.h>
+#include "wtf/Forward.h"
 
 namespace WebCore {
 
     class AudioContext;
     class DedicatedWorkerContext;
     class DOMApplicationCache;
     class DOMWindow;
     class Event;
     class EventListener;
     class EventSource;
@@ skipping 141 matching lines @@
     {
         EventTargetData* d = eventTargetData();
         if (!d)
             return false;
         return d->eventListenerMap.contains(eventType);
     }
 
 } // namespace WebCore
 
 #endif // EventTarget_h