refactor(networking): trim down excess boilerplate

modules/global/networking.nix

@@ -1,13 +1,9 @@
-{ config, lib, pkgs, ... }:
-with lib;
-with lib.hlissner;
+{ pkgs, ... }:
 {
-  options = { };
-  config = mkMerge [
-    {
   networking.useDHCP = false;
 
-      services.avahi = {
+  services = {
+    avahi = {
       enable = true;
       nssmdns = true;
       publish = {
@@ -18,6 +14,5 @@ with lib.hlissner;
         ssh = "${pkgs.avahi}/etc/avahi/services/ssh.service";
       };
     };
-    }
-  ];
+  };
 }