Don't restart Tor after setting the right clock
_Originally created by @intrigeri on [#9256 (Redmine)](https://public-redmine-archive.tails.boum.org/code/issues/9256)_
IIRC we’re restarting Tor after setting the right clock, because it’s
not able to recover when it was started with a skewed clock. There’s
been [progress
upstream](https://trac.torproject.org/projects/tor/ticket/8766) about
that. We should check if we can get rid of some `20-time.sh` ugliness
thanks to these changes.
### Related issues
- **Related to** tails/tails#5774
- **Blocked by** tails/tails#16471
issue