treewide: Remove minecraft server

This has fallen into disuse since the big Java vulnerability, and I
have ideas for better ways of doing this. Meanwhile it's making
maintenance and refactoring more difficult.

Hence I'll remove the server completely for the time being.

pkgs/default.nix

@@ -1,21 +1,5 @@
-{
-  pkgs,
-  local-lib,
-  ...
-}: let
-  inherit (pkgs.lib) callPackageWith;
-  callPackage = callPackageWith (pkgs // {inherit local-lib;});
+{pkgs, ...}: let
+  inherit (pkgs.lib) callPackage;
 in {
-  # Forge
-  forge-server = callPackage ./minecraft/forge-server.nix {};
-
-  # Build support
-  fetchFromCurseForge = callPackage ./build-support/fetchFromCurseForge.nix {};
-
-  # Minecraft modpacks
-  voor-kia = callPackage ./minecraft/voor-kia.nix {};
-  voor-kia-client = callPackage ./minecraft/voor-kia-client.nix {};
-
-  # Starbound
   starbound = callPackage ./starbound {};
 }