Release team involvement

[Olav Vitters <olav vitters nl>]

Hi all,

Over the last few years I haven't contributed much to the release team.
It's time to come to the conclusion that it won't change and it's better
to leave the team. I hope clearly acknowledging this ensures there's
room for others to take over.

Thanks for all the nice meetings over the various years!

-- 
Regards,
Olav