add a timeout in case a system-container refuses to quit

Signed-off-by: Sven Dowideit <SvenDowideit@home.org.au>

cmd/power/shutdown.go

@@ -31,9 +31,6 @@ func Main() {
 	}
 	app.HideHelp = true
 
-	log.Infof("%s, %s", app.Usage, app.Version)
-	fmt.Printf("%s, %s", app.Usage, app.Version)
-
 	app.Run(os.Args)
 }