sfc: Do not include unneeded headers

Earlier refactoring has made these inclusions unnecessary.
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/sfc/net_driver.h

@@ -18,7 +18,6 @@
 #include <linux/etherdevice.h>
 #include <linux/ethtool.h>
 #include <linux/if_vlan.h>
-#include <linux/timer.h>
 #include <linux/mdio.h>
 #include <linux/list.h>
 #include <linux/pci.h>

drivers/net/sfc/selftest.c

@@ -24,8 +24,6 @@
 #include "nic.h"
 #include "selftest.h"
 #include "workarounds.h"
-#include "spi.h"
-#include "io.h"
 
 /*
  * Loopback test packet structure