This reverts commit 0878ca7ab4.
My change to enable JBIG for splix did not work correctly. I was unable to get to the bottom of it because the build never completed. Given that it's also timing out in Hydra (see https://hydra.nixos.org/eval/1372226) I think it's best to simply back it out.
This reverts commit e338d6a0fc. I originally
reverted the update because it broke my Samsung printer. Now, it turns out that
this issue can be fixed by deleting and then re-creating the printer in CUPS to
update the driver.
It's possible that Gutenprints 'cups-genppdupdates' could remedy the situation
as well, but I had no chance to verify that since I don't use Gutenprint.
Closes https://github.com/NixOS/nixpkgs/issues/13734.
