The mounts were only ever read by one-off migration scripts, and their
cache had grown to 9.7 GB. restic and the bucket replica talk to object
storage directly, so nothing needs a filesystem view of the buckets.
Disable s3fs like on asxpio-ops; the bootstrap playbook unmounts and
drops the fstab lines (applied by hand, cache removed).
The playbook still created Immich directories under the mount and its
summary needed the cache size, which a disabled host no longer sets.
Assisted-by: Claude:opus-5-5
