refs: Remove MySQL test run
refs: Remove MySQL test run

We no longer support MySQL or sqlite. We rely on the sqlite tests to handle riak, so leaving them in
place for now.

beeftornado/sentry,beeftornado/sentry,mvaled/sentry,beeftornado/sentry,mvaled/sentry,mvaled/sentry,mvaled/sentry,mvaled/sentry,mvaled/sentry