s390/qdio: remove unused macros

These macros haven't seen any use in a long time. Also note that the
queue_irqs_*() ones wouldn't even compile anymore.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>