Remove unused includes from various .cpp files in core/

Source/core/editing/CompositeEditCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 22 matching lines @@
 #include "core/dom/ExceptionCodePlaceholder.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/Range.h"
 #include "core/dom/ScopedEventQueue.h"
 #include "core/dom/Text.h"
 #include "core/editing/AppendNodeCommand.h"
 #include "core/editing/ApplyStyleCommand.h"
 #include "core/editing/DeleteFromTextNodeCommand.h"
 #include "core/editing/DeleteSelectionCommand.h"
 #include "core/editing/Editor.h"
-#include "core/editing/EditorInsertAction.h"
 #include "core/editing/InsertIntoTextNodeCommand.h"
 #include "core/editing/InsertLineBreakCommand.h"
 #include "core/editing/InsertNodeBeforeCommand.h"
 #include "core/editing/InsertParagraphSeparatorCommand.h"
-#include "core/editing/InsertTextCommand.h"
 #include "core/editing/MergeIdenticalElementsCommand.h"
 #include "core/editing/RemoveCSSPropertyCommand.h"
 #include "core/editing/RemoveNodeCommand.h"
 #include "core/editing/RemoveNodePreservingChildrenCommand.h"
 #include "core/editing/ReplaceNodeWithSpanCommand.h"
 #include "core/editing/ReplaceSelectionCommand.h"
 #include "core/editing/SetNodeAttributeCommand.h"
 #include "core/editing/SplitElementCommand.h"
 #include "core/editing/SplitTextNodeCommand.h"
 #include "core/editing/SplitTextNodeContainingElementCommand.h"
@@ skipping 1400 matching lines @@
     return node.release();
 }
 
 PassRefPtr<Element> createBlockPlaceholderElement(Document* document)
 {
     RefPtr<Element> breakNode = document->createElement(brTag, false);
     return breakNode.release();
 }
 
 } // namespace WebCore