fix(build) Remove unused dockerfile
fix(build) Remove unused dockerfile

We don't use this dockerfile internally and the on-premise version of
sentry is in a different repository.

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