Remove MicroData implementation

Source/WebCore/html/HTMLMetaElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2010 Apple Inc. All rights reserved.
  *
  * 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.
@@ skipping 85 matching lines @@
 String HTMLMetaElement::httpEquiv() const
 {
     return getAttribute(http_equivAttr);
 }
 
 String HTMLMetaElement::name() const
 {
     return getNameAttribute();
 }
 
-#if ENABLE(MICRODATA)
-String HTMLMetaElement::itemValueText() const
-{
-    return getAttribute(contentAttr);
 }
-
-void HTMLMetaElement::setItemValueText(const String& value, ExceptionCode&)
-{
-    setAttribute(contentAttr, value);
-}
-#endif
-
-}