Delete stuff no one understands
### Why
When I look at our handbook page, there's things that I can't understand. It's possible others don't understand them either.
### What
- [ ] identify sections that don't provide any meaning or value and delete them
If we later realize there's some missing data, we can add it back in a meaningful way. But the whole team page will be more useful if we [operate with a bias for action ](https://handbook.gitlab.com/handbook/values/#operate-with-a-bias-for-action) and remove stuff that is not immediately clear to readers.
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