[PATCH] r8169: unneeded synchronize_irq()

synchronize_irq() is not needed as it is already issued by free_irq().
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>

drivers/net/r8169.c

@@ -2261,7 +2261,6 @@ rtl8169_close(struct net_device *dev)
 
 	spin_unlock_irq(&tp->lock);
 
-	synchronize_irq(dev->irq);
 	free_irq(dev->irq, dev);
 
 	netif_poll_disable(dev);