Bug#863675: [debian-mysql] Bug#863675: libmariadbd-dev: fails to upgrade from 'sid' - trying to overwrite /usr/bin/mysql_config

[Otto Kekäläinen]

MariaDB 10.3 test packages should be removed from experimental. I
think it was just a temporary test by Ondrej. There is no point in
having a unreleased upstream version in Debian permantently.