Bulk cleanup old images

[MichaelSimons]

Should we do a bulk cleanup of the old images stored on MAR? We have been asked in the past by MAR to cleanup old images. We have a number of extremely old images that are good candidates. This may make the work on adding EOL annotations to old images easier.

[lbussell]

[Triage] MAR has documentation on how to do bulk deletion of images via a json file - [internal link]

This repo has had a number of different tagging schemes over the years - it would be easy to come up with a query to delete all images with a known out-of-date tagging scheme. Images that are out of date from this repo should not be used.

Any images we remove should also be removed from our internal ACR.