goto: remove updateScript

Currently, it does not work as expected since the goto 2.1.0 release is
not tagged.

pkgs/by-name/go/goto/package.nix

···
   fetchFromGitHub,
   gawk,
   lib,
-  nix-update-script,
   runCommand,
   stdenvNoCC,
   writableTmpDirAsHomeHook,
···
 
         touch $out
       '';
-
-  passthru.updateScript = nix-update-script {
-    extraArgs = [ "--version=branch" ];
-  };
 
   meta = {
     description = "Alias and navigate to directories with tab completion";