Remove pvc-flush service

This service caused more headaches than it was worth, so remove it.

The original goal was to cleanly flush nodes on shutdown and unflush
them on startup, but this is tightly controlled by Ansible playbooks at
this point, and this is something best left to the Administrator and
their particular situation anyways.

debian/pvc-daemon-node.install

@@ -3,5 +3,4 @@ node-daemon/pvcnoded.sample.yaml etc/pvc
 node-daemon/pvcnoded usr/share/pvc
 node-daemon/pvcnoded.service lib/systemd/system
 node-daemon/pvc.target lib/systemd/system
-node-daemon/pvc-flush.service lib/systemd/system
 node-daemon/monitoring usr/share/pvc

debian/pvc-daemon-node.postinst

@@ -7,11 +7,6 @@ systemctl daemon-reload
 systemctl enable /lib/systemd/system/pvcnoded.service
 systemctl enable /lib/systemd/system/pvc.target
 
-# Inform administrator of the autoflush daemon if it is not enabled
-if ! systemctl is-active --quiet pvc-flush.service; then
-    echo "NOTE: The PVC autoflush daemon (pvc-flush.service) is not enabled by default; enable it to perform automatic flush/unflush actions on host shutdown/startup."
-fi
-
 # Inform administrator of the service restart/startup not occurring automatically
 if systemctl is-active --quiet pvcnoded.service; then
     echo "NOTE: The PVC node daemon (pvcnoded.service) has not been restarted; this is up to the administrator."

node-daemon/pvc-flush.service

@@ -1,20 +0,0 @@
-# Parallel Virtual Cluster autoflush daemon
-
-[Unit]
-Description = Parallel Virtual Cluster autoflush daemon
-After = pvcnoded.service pvcapid.service zookeeper.service libvirtd.service ssh.service ceph.target network-online.target
-Wants = pvcnoded.service
-PartOf = pvc.target
-
-[Service]
-Type = oneshot
-RemainAfterExit = true
-WorkingDirectory = /usr/share/pvc
-TimeoutSec = 30min
-ExecStartPre = /bin/sleep 30
-ExecStart = /usr/bin/pvc -c local node unflush --wait
-ExecStop = /usr/bin/pvc -c local node flush --wait
-ExecStopPost = /bin/sleep 5
-
-[Install]
-WantedBy = pvc.target