discord: remove the SKIP_HOST_UPDATE hack. it's been upstreamed

modules/home-manager/default.nix

@@ -19,7 +19,6 @@ in
 {
   imports = [
     ./aerc.nix
-    ./discord.nix
     ./firefox.nix
     ./git.nix
     ./kitty.nix

modules/home-manager/discord.nix

@@ -1,15 +0,0 @@
-{ config, lib, ... }:
-
-# XXX: this doesn't work when discord files are persisted to ~/private
-# TODO: is there some env var for this? or i could wrap the Discord binary to create this on launch
-lib.mkIf false
-# lib.mkIf config.sane.home-manager.enable
-{
-  # TODO: this should only be enabled on gui devices
-  # make Discord usable even when client is "outdated"
-  home-manager.users.colin.xdg.configFile."discord/settings.json".text = ''
-    {
-      "SKIP_HOST_UPDATE": true
-    }
-  '';
-}