challenger: disable unused services

hosts/challenger/configuration.nix

@@ -12,9 +12,9 @@
       # ./exports.nix
       ./filesystems.nix
 
-      ./services/archivebox.nix
+      # ./services/archivebox.nix
       ./services/calibre.nix
-      ./services/ersatztv.nix
+      # ./services/ersatztv.nix
       ./services/jellyfin.nix
       ./services/komga.nix
       ./services/navidrome.nix
@@ -41,7 +41,6 @@
   environment.variables = { EDITOR = "vim"; };
   environment.systemPackages = with pkgs; [
     zfs
-    ncdu
   ];
 
   virtualisation.docker.enable = true;