chore: remove unused genesis config bits

modules/nixos/adblock-update.nix

@@ -0,0 +1,35 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.greg.adblockUpdate;
+in
+{
+
+  options.greg.adblockUpdate = {
+    enable = lib.mkEnableOption "Enable auto-update of block list";
+  };
+
+  config = lib.mkIf cfg.enable {
+    systemd = {
+      services.adblock-update = {
+        after = [ "network-online.target" ];
+        requires = [ "network-online.target" ];
+        script = lib.getExe pkgs.adblockUpdate;
+        serviceConfig.Type = "oneshot";
+      };
+      timers.adblock-update = {
+        wantedBy = [ "multi-user.target" ];
+        after = [ "network-online.target" ];
+        requires = [ "network-online.target" ];
+        timerConfig = {
+          OnCalendar = "daily";
+          Unit = "adblock-update.service";
+        };
+      };
+    };
+  };
+}

modules/nixos/default.nix

@@ -4,6 +4,7 @@
 
 {
   imports = [
+    ./adblock-update.nix
     ./albyhub.nix
     ./backup.nix
     ./ceph.nix