No more healthcheck

RUNBOOK.md

@@ -47,8 +47,6 @@ Run once, by hand, on the server:
    # create a remote named "scaleway", type S3, matching your Scaleway
    # Object Storage credentials and region
    ```
-7. Set a real healthcheck URL in `borg-backup.sh` (`HEALTHCHECK_URL=`), for
-   example from https://healthchecks.io.
 
 ## 2. Deploying the Scripts
 
@@ -78,9 +76,6 @@ ls -lt /var/log/borg/backup-*.log | head -1   # latest log file
 tail -50 /var/log/borg/backup-*.log           # inspect it
 ```
 
-Or watch the healthcheck dashboard configured in step 1.7 — a missed or
-failed run pages/alerts there.
-
 ## 4. Day-2 Operations
 
 List archives:
@@ -205,4 +200,4 @@ borg extract --lock-wait 600 "::$LATEST"
 Confirm the dump files under `mariadb/dump/` are present, non-empty, and
 importable (`mysql -u root -p < mariadb/dump/somedb.sql` against a
 throwaway MariaDB container). Log the drill date and outcome somewhere
-durable (e.g. the healthcheck dashboard's notes, or a team wiki page).
+durable (e.g. a team wiki page).