gap: sage no longer needs a wrapper

pkgs/applications/science/math/gap/default.nix

···
     # https://github.com/NixOS/nixpkgs/pull/192548#discussion_r992824942
     rm -r "$out/share/gap/pkg"
     cp -ar pkg tst "$out/share/gap"
-
-    makeWrapper "$out/lib/gap/gap" "$out/bin/gap" --add-flags "-l $out/share/gap"
   '';
 
   preFixup = ''