netdev: DM9000: remove BLACKFIN hacking in DM9000 netdev driver

remove integer casting in the read/write IO accessors,
because Blackfin now provides those functions
Tested-by: NJavier Herrero <jherrero@hvsistemas.es>
Signed-off-by: NBryan Wu <cooloney@kernel.org>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

drivers/net/dm9000.c

@@ -47,15 +47,6 @@
 #define CARDNAME	"dm9000"
 #define DRV_VERSION	"1.31"
 
-#ifdef CONFIG_BLACKFIN
-#define readsb	insb
-#define readsw	insw
-#define readsl	insl
-#define writesb	outsb
-#define writesw	outsw
-#define writesl	outsl
-#endif
-
 /*
  * Transmit timeout, default 5 seconds.
  */