gianfar: delete orphaned version strings and dead macros

There were two version strings, and neither one was being used.
Also in the same proximity were some unused #define that were
left over from the past.  Delete them all.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>

drivers/net/ethernet/freescale/gianfar.h

@@ -78,11 +78,8 @@ struct ethtool_rx_list {
 #define INCREMENTAL_BUFFER_SIZE 512
 
 #define PHY_INIT_TIMEOUT 100000
-#define GFAR_PHY_CHANGE_TIME 2
 
-#define DEVICE_NAME "%s: Gianfar Ethernet Controller Version 1.2, "
 #define DRV_NAME "gfar-enet"
-extern const char gfar_driver_name[];
 extern const char gfar_driver_version[];
 
 /* MAXIMUM NUMBER OF QUEUES SUPPORTED */