docs: Remove references to `copilot` and `show_copilot_suggestions` settings (#13169)
This PR removes references to the deprecated `copilot` and
`show_copilot_suggestions` settings.
These settings were removed in #13167.
Release Notes:
- N/A
bb1d52b485Marshall Bowers committed on 6/17/2024, 8:12:26 PM· committed by GitHubparentca035db