trivial: uefi: quiet down debugging messages
trivial: uefi: quiet down debugging messages

With how well fwupd UEFI updates work these days >99% of people
don't need to see messages about the capsule update running.
Those who have problems, this isn't going to help them.

fwupd/fwupd,hughsie/fwupd,hughsie/fwupd,hughsie/fwupd,fwupd/fwupd,fwupd/fwupd,fwupd/fwupd,hughsie/fwupd