staging: wilc1000: remove unused 'lock' varible in 'wilc_priv' structure

Cleanup patch to remove the unused variable from 'wilc_priv' structure.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/wilc_wfi_netdevice.h

@@ -78,7 +78,6 @@ struct wilc_priv {
 	u8 monitor_flag;
 	int status;
 	struct sk_buff *skb;
-	spinlock_t lock;
 	struct net_device *dev;
 	struct host_if_drv *hif_drv;
 	struct host_if_pmkid_attr pmkid_list;