250-systemd.bats: remove outdated comment

Remove an outdated comment on the absence of exit-code propagation when
running K8s workloads in systemd.  The `podman-kube@` systemd template
is using default restart policy of the system.  The exit-code
propagation is tested in other tests, so we can keep the logic as is.

Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>

test/system/250-systemd.bats

@@ -448,9 +448,6 @@ $name stderr" "logs work with passthrough"
     is "$output" ".*$service_name,.* (test_pod-b),$IMAGE,false,registry.*" "container-specified auto-update policy gets applied"
 
     # Kill the pod and make sure the service is not running.
-    # The restart policy is set to "never" since there is no
-    # design yet for propagating exit codes up to the service
-    # container.
     run_podman pod kill test_pod
     for i in {0..20}; do
         run systemctl is-active $service_name