MN10300: Remove stale irq_chip.end - V2

irq_chip.end is obsolete with the removal of __do_IRQ().
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Howells <dhowells@redhat.com>

arch/mn10300/kernel/mn10300-serial.c

@@ -394,7 +394,6 @@ static struct irq_chip mn10300_serial_pic = {
 	.mask		= mn10300_serial_mask_ack,
 	.mask_ack	= mn10300_serial_mask_ack,
 	.unmask		= mn10300_serial_nop,
-	.end		= mn10300_serial_nop,
 };