Remove Entity interface

Source/core/dom/Entity.h

Index: Source/core/dom/Entity.h
diff --git a/Source/core/dom/Entity.h b/Source/core/dom/Entity.h
deleted file mode 100644
index e1a7a0025135e91bbac997449a7c68e8d900e424..0000000000000000000000000000000000000000
--- a/Source/core/dom/Entity.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (C) 2000 Peter Kelly (pmk@post.com)
- * Copyright (C) 2006, 2008 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.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-#ifndef Entity_h
-#define Entity_h
-
-#include "core/dom/ContainerNode.h"
-
-namespace WebCore {
-
-class Entity : public ContainerNode {
-private:
-    Entity(); // Left unimplemented on purpose.
-};
-
-} // namespace WebCore
-
-#endif