remove unneeded change in lib_rules

Signed-off-by: Javier Chávarri <javier.chavarri@gmail.com>

src/dune_rules/lib_rules.ml

@@ -609,11 +609,7 @@ let library_rules
           ~dir_contents
           ~vlib_stubs_o_files)
   and+ () = Odoc.setup_private_library_doc_alias sctx ~scope ~dir:ctx_dir lib
-  and+ () =
-    let* enabled_if = Lib_info.enabled lib_info in
-    match enabled_if with
-    | Disabled_because_of_enabled_if -> Memo.return ()
-    | Normal | Optional -> Odoc.setup_library_odoc_rules cctx local_lib
+  and+ () = Odoc.setup_library_odoc_rules cctx local_lib
   and+ () =
     Sub_system.gen_rules
       { super_context = sctx; dir; stanza = lib; scope; source_modules; compile_info }