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.

lib/default.nix

@@ -1,12 +0,0 @@
-{
-  inputs,
-  lib,
-  pkgs,
-  ...
-}: let
-  inherit (lib) makeExtensible foldr attrValues;
-  tlater-lib = makeExtensible (self: let
-    callLibs = file: import file {inherit self lib pkgs inputs;};
-  in {minecraft = callLibs ./minecraft.nix;});
-in
-  tlater-lib.extend (self: super: foldr (a: b: a // b) {} (attrValues super))

lib/minecraft.nix

@@ -1,61 +0,0 @@
-{
-  lib,
-  pkgs,
-  ...
-}: {
-  # Make a modpack given its mod inputs.
-  #
-  # Mods should be attrsets in this format:
-  #   {
-  #     project = "";
-  #     id = "";
-  #     filename = "";
-  #     sha256 = "";
-  #   }
-  #
-  # This may be nice to read from a json ;)
-  #
-  mkModpack = {
-    name,
-    version,
-    mods,
-  }:
-    pkgs.stdenv.mkDerivation {
-      inherit name version;
-      srcs = map pkgs.local.fetchFromCurseForge mods;
-
-      sourceRoot = "src/";
-      preUnpack = "mkdir -p src/";
-      unpackCmd = "cp $curSrc src/";
-
-      installPhase = ''
-        mkdir -p $out/mods/
-        cp * $out/mods
-      '';
-    };
-
-  mkModpackZip = {
-    name,
-    version,
-    mods,
-  }:
-    pkgs.stdenv.mkDerivation {
-      inherit name version;
-      srcs = map pkgs.local.fetchFromCurseForge mods;
-
-      sourceRoot = "src/";
-      preUnpack = "mkdir -p src/";
-      unpackCmd = "cp $curSrc src/";
-
-      buildInputs = [pkgs.zip];
-
-      buildPhase = ''
-        zip voor-kia-mods.zip *.jar
-      '';
-
-      installPhase = ''
-        mkdir -p $out/
-        cp voor-kia-mods.zip $out/
-      '';
-    };
-}