the service `user@0.service` fails in system vms and virtual routers
This PR removes a change to fix memory leak of SSH connections in the systemvm templates with old linux kernel.
(cherry picked from commit e290ac54514ab1868d775f18a3e783cb30d6d5d5)
Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>