drivers/net/irda: remove exceptional & on function name

In this file, function names are otherwise used as pointers without &.

A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r@
identifier f;
@@

f(...) { ... }

@@
identifier r.f;
@@

- &f
+ f
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/irda/irda-usb.c

@@ -852,7 +852,7 @@ static void irda_usb_receive(struct urb *urb)
 		 * hot unplug of the dongle...
 		 * Lowest effective timer is 10ms...
 		 * Jean II */
-		self->rx_defer_timer.function = &irda_usb_rx_defer_expired;
+		self->rx_defer_timer.function = irda_usb_rx_defer_expired;
 		self->rx_defer_timer.data = (unsigned long) urb;
 		mod_timer(&self->rx_defer_timer, jiffies + (10 * HZ / 1000));
 		return;