german: remove 'Created by' lines

A big Thank You to the original contributors of these ports:

  *  Andreas Fehlner (fehlner@gmx.de)
  *  Boris Samorodov <bsam@FreeBSD.org>
  *  Emanuel Haupt <ehaupt@critical.ch>
  *  Slaven Rezic <eserte@cs.tu-berlin.de>
  *  Thierry Thomas <thierry@pompo.net>
  *  hq@FreeBSD.org
  *  miwi
  *  n@nectar.com
  *  wosch

With hat:	portmgr