doc: remove DenBeke from maintainers (#185)

QuentinBrosse · web-flow · commit c9cbb0d94a4d · 2019-09-16T11:30:30.000+02:00
diff --git a/MAINTAINERS.md b/MAINTAINERS.md
@@ -8,6 +8,5 @@ routing PRs, questions, etc. to the right place.
 | Name           | Tag             |
 | :------------- | :-------------- |
 | Jérôme Quéré   | @jerome-quere   |
-| Mathias Beke   | @DenBeke        |
 | Quentin Brosse | @QuentinBrosse  |
 | Olivier Cano   | @kindermoumoute |
