The [access-om3 configs run `postscript.sh`](https://github.com/ACCESS-NRI/access-om3-configs/blob/efc6d1f913b453898aa82fa40dbe133560c6bad2/config.yaml#L73) but `payu sweep` doesn't tidy up its PBS log files `postscript.sh.*`. Should the access-om3 driver be updated to do this?