All users of this prrn_is_enabled() are gone; remove it.
Signed-off-by: NNathan Lynch <nathanl@linux.ibm.com>
Reviewed-by: NSrikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200612051238.1007764-14-nathanl@linux.ibm.com