mg: drop darwin.libutil dependency

pkgs/applications/editors/mg/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, pkg-config, ncurses, buildPackages, darwin }:
+{ lib, stdenv, fetchFromGitHub, pkg-config, ncurses, buildPackages }:
 
 stdenv.mkDerivation {
   pname = "mg";
@@ -25,7 +25,7 @@ stdenv.mkDerivation {
   '';
   nativeBuildInputs = [ pkg-config ];
 
-  buildInputs = [ ncurses ] ++ lib.optional stdenv.isDarwin [ darwin.libutil ];
+  buildInputs = [ ncurses ];
 
   meta = with lib; {
     description = "Micro GNU/emacs, a portable version of the mg maintained by the OpenBSD team";