qt4: correct the header, copyright symbol, and remove myself from the list of authors

modules/gui/qt4/components/playlist/playlist.cpp

 /*****************************************************************************
- * interface_widgets.cpp : Custom widgets for the main interface
+ * playlist.cpp : Custom widgets for the playlist
  ****************************************************************************
- * Copyright ( C ) 2006 the VideoLAN team
+ * Copyright © 2006 the VideoLAN team
  * $Id$
  *
  * Authors: Clément Stenac <zorglub@videolan.org>
  *          Jean-Baptiste Kempf <jb@videolan.org>
- *          Rafaël Carré <funman@videolanorg>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by