Revert "filesystems: re-enable with systemd because installer needs mounted entries"

This is not really needed and would cause problems with systemd.

This reverts commit a6f03cc4.

postplug.d/10filesystems

@@ -5,6 +5,9 @@
 # Copyright (c) 2007 by Stefano Cotta Ramusino <stefano.cotta@openmamba.org>
 # Copyright (c) 2009-2013 by Silvan Calarco <silvan.calarco@mambasoft.it>
 
+# systemd: completely disable for now
+[ -d /run/systemd ] && exit 0
+
 if [ $UID != 0 ]; then
    echo "$0: must be superuser." >&2
    exit 1