Remove Martin Poulsen from CREDITS on his own request.

docs/CREDITS

@@ -25,8 +25,6 @@ And all the other contributors:
    | Ideas and bugfixes
  * Ryan Ryttie <kesu@kesuki.dyndns.org>
    | xchat logfiles request/help
- * Martin Poulsen <xact@mail.dk>
-   | Suggestions and moral support
  * Laocius <irish@rook.lug.usf.edu>
    | The features 'most used words' and 'most referenced nicks'
  * Luca (eni) <adsl.help@dada.it>