staging: ks7010: remove some duplicated definitions in ks_wlan_net.c

This definitions are in linux/wireless.h header so it is not
necessary at all to have this compatibility stuff duplicated here.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ks7010/ks_wlan_net.c

@@ -43,12 +43,6 @@ struct wep_key {
 	u8 key[16];	/* 40-bit and 104-bit keys */
 };
 
-/* Backward compatibility */
-#ifndef IW_ENCODE_NOKEY
-#define IW_ENCODE_NOKEY 0x0800	/* Key is write only, so not present */
-#define IW_ENCODE_MODE  (IW_ENCODE_DISABLED | IW_ENCODE_RESTRICTED | IW_ENCODE_OPEN)
-#endif /* IW_ENCODE_NOKEY */
-
 /* List of Wireless Handlers (new API) */
 static const struct iw_handler_def ks_wlan_handler_def;