gnome2.libgtkhtml: remove

Unmaintained and no package depends on it.

pkgs/desktops/gnome-2/default.nix

···
 
   libglade = callPackage ./platform/libglade { };
 
-  libgtkhtml = callPackage ./platform/libgtkhtml { };
-
   GConf = callPackage ./platform/GConf { };
 
   libgnomecanvas = callPackage ./platform/libgnomecanvas { };
···
   libgnomecups = throw "gnome2.libgnomecups has been removed"; # 2023-01-15
   libgnomeprint = throw "gnome2.libgnomeprint has been removed"; # 2023-01-15
   libgnomeprintui = throw "gnome2.libgnomeprintui has been removed"; # 2023-01-15
+  libgtkhtml = throw "gnome2.libgtkhtml has been removed"; # 2023-01-15
   python_rsvg = throw "gnome2.python_rsvg has been removed"; # 2023-01-14
 })

pkgs/desktops/gnome-2/platform/libgtkhtml/default.nix

···
-{ lib, stdenv, fetchurl, pkg-config, gtk2, gettext, libxml2 }:
-
-stdenv.mkDerivation rec {
-  pname = "libgtkhtml";
-  version = "2.11.1";
-
-  src = fetchurl {
-    url = "mirror://gnome/sources/libgtkhtml/${lib.versions.majorMinor version}/libgtkhtml-${version}.tar.bz2";
-    sha256 = "0msajafd42545dxzyr5zqka990cjrxw2yz09ajv4zs8m1w6pm9rw";
-  };
-
-  nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ gtk2 gettext ];
-  propagatedBuildInputs = [ libxml2 ];
-
-  hardeningDisable = [ "format" ];
-}