ocamlPackages.ocamlnat: drop

This package only support OCaml < 4. We only package OCaml >= 4, though.
OCaml 4.00.1 is from 2012 already, so this.. has not been supported
literally forever?

I don't think we need to add an alias for something that only fails an
assert all the time anyway.

pkgs/development/ocaml-modules/ocamlnat/default.nix

@@ -1,57 +0,0 @@
-{
-  stdenv,
-  lib,
-  fetchurl,
-  ocaml,
-  findlib,
-  ounit,
-}:
-
-# https://github.com/bmeurer/ocamlnat/issues/3
-assert lib.versionOlder ocaml.version "4";
-
-stdenv.mkDerivation rec {
-  pname = "ocamlnat";
-  version = "0.1.1";
-
-  src = fetchurl {
-    url = "http://benediktmeurer.de/files/source/${pname}-${version}.tar.bz2";
-    sha256 = "0dyvy0j6f47laxhnadvm71z1py9hz9zd49hamf6bij99cggb2ij1";
-  };
-
-  nativeBuildInputs = [
-    ocaml
-    findlib
-  ];
-  checkInputs = [ ounit ];
-
-  strictDeps = true;
-
-  prefixKey = "--prefix ";
-
-  doCheck = true;
-
-  checkTarget = "test";
-
-  createFindlibDestdir = true;
-
-  meta = {
-    description = "OCaml native toplevel";
-    homepage = "http://benediktmeurer.de/ocamlnat/";
-    license = lib.licenses.qpl;
-    longDescription = ''
-      The ocamlnat project provides a new native code OCaml toplevel
-      ocamlnat, which is mostly compatible to the byte code toplevel ocaml,
-      but up to 100 times faster. It is based on the optimizing native code
-      compiler, the native runtime and an earlier prototype by Alain
-      Frisch. It is build upon Just-In-Time techniques and currently
-      supports Unix-like systems (i.e. Linux, BSD or macOS) running on
-      x86 or x86-64 processors. Support for additional architectures and
-      operating systems is planned, but not yet available.
-    '';
-    inherit (ocaml.meta) platforms;
-    maintainers = [
-      lib.maintainers.maggesi
-    ];
-  };
-}

pkgs/top-level/ocaml-packages.nix

@@ -2227,8 +2227,6 @@ let
 
         hol_light = callPackage ../applications/science/logic/hol_light { };
 
-        ocamlnat = callPackage ../development/ocaml-modules/ocamlnat { };
-
         ### End ###
 
       }