starbound: Don't build service for now

This includes the really huge steam-run closure, which is just a PITA
to keep up with if we're never using it.

configuration/default.nix

@@ -24,7 +24,7 @@
     ./services/nextcloud.nix
     ./services/webserver.nix
     ./services/wireguard.nix
-    ./services/starbound.nix
+    # ./services/starbound.nix -- Not currently used
     ./services/postgres.nix
     ./nginx.nix
     ./sops.nix
@@ -49,9 +49,6 @@
     settings.trusted-users = [ "@wheel" ];
   };
 
-  nixpkgs.config.allowUnfreePredicate = pkg:
-    builtins.elem (lib.getName pkg) [ "steam-original" "steam-runtime" "steam-run" "steamcmd" ];
-
   # Optimization for minecraft servers, see:
   # https://bugs.mojang.com/browse/MC-183518
   boot.kernelParams = [ "highres=off" "nohz=off" ];