Remove myself from depot_tools OWNERS

Change-Id: I36707ebe5c436d920605bfb833536542dee911ef
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3647823
Auto-Submit: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Robbie Iannucci <iannucci@chromium.org>

OWNERS

@@ -4,7 +4,6 @@ ajp@google.com
 aravindvasudev@google.com
 gavinmak@google.com
 iannucci@chromium.org
-jochen@chromium.org
 sokcevic@google.com
 
 per-file ninja*=thakis@chromium.org