proto: Remove `AcceptTermsOfService` message (#36272)

This PR removes the `AcceptTermsOfService` RPC message.

We're no longer using the message after
https://github.com/zed-industries/zed/pull/36255.

Release Notes:

- N/A
7199c733b2Marshall Bowers committed on 8/15/2025, 8:21:45 PM· committed by GitHubparent65f64aa
4 files changedLine totals unavailable