Sandbox Cleanup

[SaintLuther]

We have quite the Sandbox addon bloat, totaling over 6GBs (I believe this is uncompressed, not the download size)
This is causing players to give up joining the server when it takes too long.

Here is a screenshot of the top offenders:



Here is a csv of the full list: https://lfgs.co/u/d29ZO.csv

You can import that to OneDrive/Office, Google Docs, or some online tool like https://www.becsv.com/csv-viewer.php

Suggest below what we should remove. There are also a lot of dead addons on that csv that should be removed along with other addons that were supposed to work with them.