Avoid possible infinite recursion

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/system/configs/brightnessctl/default.nix

@@ -1,9 +1,4 @@
-{
-  config,
-  lib,
-  pkgs,
-  ...
-}:
+{ pkgs, ... }:
 {
   environment.systemPackages = with pkgs; [ brightnessctl ];
 
@@ -18,15 +13,4 @@
       ACTION=="add", SUBSYSTEM=="leds",      RUN+="${chgrp} input /sys/class/leds/%k/brightness"
       ACTION=="add", SUBSYSTEM=="leds",      RUN+="${chmod} g+w   /sys/class/leds/%k/brightness"
     '';
-
-  users.groups =
-    let
-      members = builtins.attrNames (
-        lib.attrsets.filterAttrs (_: config: config.isNormalUser) config.users.users
-      );
-    in
-    {
-      video.members = members;
-      input.members = members;
-    };
 }