Lintian unused override entry

Lintian discovered an unused override entry in its database. Most likely
it was used for a false-positive that has been fixed. However, some tags
are only triggered in packages built on certain architectures. In this
case, the override may need an architecture qualifier.

debian/mariadb-test.lintian-overrides

 # OK, this file is part of test suite and only used for a test
 mariadb-test: arch-dependent-file-in-usr-share usr/share/mysql/mysql-test/lib/My/SafeProcess/my_safe_process
-mariadb-test: executable-not-elf-or-script usr/share/mysql/mysql-test/lib/generate-ssl-certs.sh