armh: get rid of 50-sshd-root

It was a temporary hack actually, and is better dropped long-term:
things like predefined root accounts with remote access are *evil*
and this hook was a half of that "solution".

Use of oem feature to integrate first-boot setup is recommended
to deal with this issue, at least when graphics are available.

features.in/armh/rootfs/image-scripts.d/50-sshd-root

@@ -1,8 +0,0 @@
-#!/bin/sh
-# poor man's root switch
-# NB: use/deflogin might have been used to create predefined users
-
-cat >> /etc/openssh/sshd_config << EOF
-PermitRootLogin yes
-UseDNS no
-EOF