[PARPORT] Remove unused 'irq' argument from parport irq functions

None of the drivers with a struct pardevice's ->irq_func() hook ever
used the 'irq' argument passed to it, so remove it.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/sound/drivers/mts64.c b/sound/drivers/mts64.c
index 911c159..dcc90f9 100644
--- a/sound/drivers/mts64.c
+++ b/sound/drivers/mts64.c
@@ -830,7 +830,7 @@
 /*********************************************************************
  * parport stuff
  *********************************************************************/
-static void snd_mts64_interrupt(int irq, void *private)
+static void snd_mts64_interrupt(void *private)
 {
 	struct mts64 *mts = ((struct snd_card*)private)->private_data;
 	u16 ret;