ocamlPackages: remove broken packages

Remove ocaml-freestanding and torch packages which have been marked
broken since NixOS 24.05 and remain unfixed.

- ocaml-freestanding: Not compatible with solo5 >= 0.7
- torch: Not compatible with libtorch >= 2.3.0

Per RFC 180, packages broken for a full release cycle are subject
to removal.

NixOS/rfcs#180

Author: Mic92

pkgs/development/ocaml-modules/ocaml-freestanding/configurable-binding.patch

@@ -1439,8 +1439,6 @@ let
 
         ocaml_expat = callPackage ../development/ocaml-modules/expat { };
 
-        ocaml-freestanding = callPackage ../development/ocaml-modules/ocaml-freestanding { };
-
         ocaml_gettext = callPackage ../development/ocaml-modules/ocaml-gettext { };
 
         ocaml_libvirt = callPackage ../development/ocaml-modules/ocaml-libvirt { };
@@ -2113,10 +2111,6 @@ let
 
         topkg = callPackage ../development/ocaml-modules/topkg { };
 
-        torch = callPackage ../development/ocaml-modules/torch {
-          torch = pkgs.libtorch-bin;
-        };
-
         trace = callPackage ../development/ocaml-modules/trace { };
 
         trace-tef = callPackage ../development/ocaml-modules/trace/tef.nix { };
@@ -2320,8 +2314,10 @@ let
         dune_2 = pkgs.dune_2; # Added 2025-12-08
         dune_3 = pkgs.dune_3; # Added 2025-12-08
         gd4o = throw "ocamlPackages.gd4o is not maintained, use ocamlPackages.gd instead";
+        ocaml-freestanding = throw "ocamlPackages.ocaml-freestanding has been removed due to being broken for more than a year; see RFC 180"; # Added 2026-02-05
         ocaml-vdom = throw "2023-10-09: ocamlPackages.ocaml-vdom was renamed to ocamlPackages.vdom";
         ocaml_lwt = throw "ocamlPackages.ocaml_lwt has been renamed to ocamlPackages.lwt"; # Added 2025-12-05
+        torch = throw "ocamlPackages.torch has been removed due to being broken for more than a year; see RFC 180"; # Added 2026-02-05
       }
     )).overrideScope
       liftJaneStreet;