Footer items - some leftover cruft?

I came across these footer-left entries in `config.toml` while taking a critical look at the footer:

https://github.com/JupiterBroadcasting/jupiterbroadcasting.com/blob/2fe5a3969c1a36cb4fc145a6aa080daeb2b04837/config.toml#L164

They, however, do not match the current entries in the footer (and several of them are outdated, i.e. kiwi IRC not using KiwiNext, Telegram link referencing jb.com, etc.)

The new footer-left items are more cleverly defined here in `themes/jb/layouts/partials/footer.html`:
https://github.com/JupiterBroadcasting/jupiterbroadcasting.com/blob/2fe5a3969c1a36cb4fc145a6aa080daeb2b04837/themes/jb/layouts/partials/footer.html#L22

### Question
* Can we clean up the `config.toml` items safely? i.e. can we delete those items?
* Are there other `config.toml` items - such as the right footer/GitHub items - that can use the same clever treatment as the footer-left/social/network ones?