Remove unused/unneeded code from core/editing.

Source/core/editing/CompositeEditCommand.h

 /*
  * Copyright (C) 2005, 2006, 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 31 matching lines @@
 
 class EditCommandComposition final : public UndoStep {
 public:
     static PassRefPtrWillBeRawPtr<EditCommandComposition> create(Document*, const VisibleSelection&, const VisibleSelection&, EditAction);
 
     virtual bool belongsTo(const LocalFrame&) const override;
     virtual void unapply() override;
     virtual void reapply() override;
     virtual EditAction editingAction() const override { return m_editAction; }
     void append(SimpleEditCommand*);
-    bool wasCreateLinkCommand() const { return m_editAction == EditActionCreateLink; }
 
     const VisibleSelection& startingSelection() const { return m_startingSelection; }
     const VisibleSelection& endingSelection() const { return m_endingSelection; }
     void setStartingSelection(const VisibleSelection&);
     void setEndingSelection(const VisibleSelection&);
     Element* startingRootEditableElement() const { return m_startingRootEditableElement.get(); }
     Element* endingRootEditableElement() const { return m_endingRootEditableElement.get(); }
 
     virtual void trace(Visitor*) override;
 
@@ skipping 111 matching lines @@
     virtual bool isCompositeEditCommand() const override final { return true; }
 
     RefPtrWillBeMember<EditCommandComposition> m_composition;
 };
 
 DEFINE_TYPE_CASTS(CompositeEditCommand, EditCommand, command, command->isCompositeEditCommand(), command.isCompositeEditCommand());
 
 } // namespace blink
 
 #endif // CompositeEditCommand_h