laptop-mode-tools: don't control autosuspend.

Some USB input devices don't support autosuspend, see e.g.:
https://github.com/systemd/systemd/issues/340

This change might help fix #10850, but even if it doesn't, it makes
sense to me that we don't let laptop-mode-tools fiddle with this
on a Live system.

Refs: #10850

config/chroot_local-hooks/47-tweak_laptop-mode-tools

+#!/bin/sh
+
+set -e
+
+echo "Tweaking laptop-mode-tools"
+
+sed -i'' 's,^CONTROL_RUNTIME_AUTOSUSPEND=1$,CONTROL_RUNTIME_AUTOSUSPEND=0,' \
+    /etc/laptop-mode/conf.d/runtime-pm.conf