orinoco_usb: remove version definition

Avoids this:

  CC [M]  drivers/net/wireless/orinoco/orinoco_usb.o
drivers/net/wireless/orinoco/orinoco_usb.c:1759:13: warning: ‘version’ defined but not used
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/orinoco/orinoco_usb.c

@@ -1754,11 +1754,6 @@ static struct usb_driver orinoco_driver = {
 	.id_table = ezusb_table,
 };
 
-/* Can't be declared "const" or the whole __initdata section will
- * become const */
-static char version[] __initdata = DRIVER_NAME " " DRIVER_VERSION
-	" (Manuel Estrada Sainz)";
-
 module_usb_driver(orinoco_driver);
 
 MODULE_AUTHOR("Manuel Estrada Sainz");