dbus: drop user/group from skeleton

It belongs to the package.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

system/skeleton/etc/group

@@ -20,7 +20,6 @@ utmp:x:43:
 plugdev:x:46:
 staff:x:50:
 lock:x:54:
-dbus:x:81:
 netdev:x:82:
 ftp:x:83
 nogroup:x:99:

system/skeleton/etc/passwd

@@ -8,7 +8,6 @@ proxy:x:13:13:proxy:/bin:/bin/sh
 www-data:x:33:33:www-data:/var/www:/bin/sh
 backup:x:34:34:backup:/var/backups:/bin/sh
 operator:x:37:37:Operator:/var:/bin/sh
-dbus:x:81:81:dbus:/var/run/dbus:/bin/sh
 ftp:x:83:83:ftp:/home/ftp:/bin/sh
 nobody:x:99:99:nobody:/home:/bin/sh
 sshd:x:103:99:Operator:/var:/bin/sh