chore(graph/graph): remove dead code

This code was introduced with commented out sections. Just delete them.

Original commit: 18fc707fdf06aeb50fa5250f59f0ef4597d7cf73

Docker-DCO-1.1-Signed-off-by: Brandon Philips <brandon.philips@coreos.com> (github: philips)

graph/graph.go

@@ -263,8 +263,6 @@ func SetupInitLayer(initLayer string) error {
 		"/etc/hostname":    "file",
 		"/dev/console":     "file",
 		"/etc/mtab":        "/proc/mounts",
-		// "var/run": "dir",
-		// "var/lock": "dir",
 	} {
 		parts := strings.Split(pth, "/")
 		prev := "/"