[roles] Remove unused trusted public key

roles/default.nix

@@ -1,10 +1,7 @@
-{ config, lib, pkgs, ... }:
+{ lib, pkgs, ... }:
 
 with lib;
 
-let
-  cfg = config.roles;
-in
 {
   imports = [
     ./audio
@@ -19,10 +16,6 @@ in
     ./virtualisation
   ];
 
-  options.roles = {
-    enable = mkEnableOption "Enable roles";
-  };
-
   config = {
     i18n.defaultLocale = "en_US.UTF-8";
     i18n.extraLocaleSettings = {
@@ -65,9 +58,6 @@ in
         substituters = [
           "https://hyprland.cachix.org"
         ];
-        trusted-public-keys = [
-          "hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="
-        ];
       };
     };