trealla: remove update script

It is not working as expected, since r-ryantm did not update the expressions.

pkgs/by-name/tr/trealla/package.nix

@@ -1,7 +1,6 @@
 {
   lib,
   fetchFromGitHub,
-  gitUpdater,
   libffi,
   openssl,
   readline,
@@ -69,8 +68,6 @@ stdenv.mkDerivation (finalAttrs: {
 
   checkFlags = [ "test" ] ++ lib.optionals checkLeaks [ "leaks" ];
 
-  passthru.updateScript = gitUpdater { rev-prefix = "v"; };
-
   meta = {
     homepage = "https://trealla-prolog.github.io/trealla/";
     description = "A compact, efficient Prolog interpreter written in ANSI C";