Problem: Not able to delete accumulated avatar and header images

[jorgesat]

The tootctl cron job currently deletes attached media after certain period of time. However, many admins are complaining that there is a large amount of disk space being used in avatar and header images, especially from large instances and from old instances and accounts that no longer exist.

Please see: https://github.com/mastodon/mastodon/issues/9567

Proposed solution: Enabling the possibility to delete such images from disk.