Revert "gpio-cdev: add nu801 userspace driver"

This reverts commit f536f5ebdd.

As Hauke commented, this causes builder failures on 5.4 kernels.
This revert includes changes to the mx100 kernel modules
dependency as well as the uci led definitions.

Tested-by: Chris Blake <chrisrblake93@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

package/system/gpio-cdev/nu801/files/nu801.init

@@ -1,15 +0,0 @@
-#!/bin/sh /etc/rc.common
-# SPDX-License-Identifier: GPL-2.0-or-later
-
-START=15
-STOP=94
-USE_PROCD=1
-
-start_service() {
-	. /lib/functions.sh
-
-	procd_open_instance
-	procd_set_param command /usr/sbin/nu801 "$(board_name)"
-	procd_set_param respawn 5 1 5
-	procd_close_instance
-}