TT#36043 Remove monit.service dependency information from service files

We do not require monit in any way now. Listing it as a dependency and
declaring an After ordering means that on reboot, heartbeat is always
shut down first, it will then try to shut down all NGCP services, and
meanwhile monit will notice and try to restart them, making heartbeat
not be able to shut down cleanly.

Change-Id: I454c7714159b92c9237f2530ba8ba82316481478

debian/heartbeat-2.hb_watchdog.service

@@ -3,7 +3,6 @@ Description=Heartbeat Watchdog for High-Availability Linux
 Documentation=man:heartbeat(8)
 After=network-online.target
 After=heartbeat.service
-After=monit.service
 Requires=heartbeat.service
 Wants=network-online.target
 

debian/heartbeat-2.heartbeat.service

@@ -1,12 +1,10 @@
 [Unit]
 Description=Heartbeat subsystem for High-Availability Linux
 Documentation=man:heartbeat(8)
-After=monit.service
 After=network-online.target
 After=time-sync.target
 After=openhpid.service
 Wants=network-online.target
-Wants=monit.service
 
 [Service]
 Type=forking