lists: drop pkglists redirection
This removes files that were providing pkglists redirection for updater versions in 4.0-alpha* releases.
First officially forward compatible version is 4.0-beta1 and that does not have any pkglists in medkit while still expecting these lists in old location. The advantage is that in medkit those lists are not enabled so update is possible and nobody should still run 4.0-beta1 now so we can drop this without a problem.