remove some no-longer-referenced files

Signed-off-by: Adam Warner <me@adamwarner.co.uk>

src/s6/debian-root/usr/bin/host-ip

@@ -1,10 +0,0 @@
-#!/usr/bin/with-contenv sh
-
-#
-# This script will determine the network IP of the container.
-#
-# Return format should be a single IP address.
-#
-
-# Default to using the value of the $HOSTNAME ENV variable.
-getent hosts ${1:-$HOSTNAME} | awk '{print $1}'

src/s6/debian-root/usr/bin/set-contenv

@@ -1,12 +0,0 @@
-#!/usr/bin/execlineb -S0
-
-if { s6-test $# -eq 2 }
-
-backtick -in FILENAME {
-    pipeline { s6-echo "${1}" }
-    tr "a-z" "A-Z"
-}
-import -u FILENAME
-
-redirfd -w 1 /var/run/s6/container_environment/${FILENAME}
-s6-echo -n -- ${2}