[hotfix] remove restart job
context:
- now that we have healthchecks in place, it is safer to not auto-restart all the time, because we have an automated way of detecting outages and fixing them on a case-by-case basis
- this creates an opportunity to measure how open outages actually happen without restarting (or whether restarting is actually a good fix when they happen)
- if restarts are not necessary, we would prefer to avoid them, since they sometimes result in messages being dropped
- for now: we are going to disable restarts and monitor for several days the impact that has on outages.
- if after 5 days we don't see a lot of outages, we will keep the restarts disabled. if we do see a spike in outages, we will restore the restart job, but perhaps at a less frequent rate of every 3 hours (which job is left commented out in the current crontab)