Remove support for ddb-only %r, %z, and the ddb-specific handling of %n from the kernel printf. This will allow support for the real %z in the near future.
Remove support for ddb-only %r, %z, and the ddb-specific handling of %n from
the kernel printf. This will allow support for the real %z in the near future.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars