[PATCH] rsi: remove set but not used variable 'header_size'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/wireless/rsi/rsi_91x_hal.c: In function 'rsi_send_data_pkt':
drivers/net/wireless/rsi/rsi_91x_hal.c:288:5: warning:
 variable 'header_size' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <redacted>
---
 drivers/net/wireless/rsi/rsi_91x_hal.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/net/wireless/rsi/rsi_91x_hal.c b/drivers/net/wireless/rsi/rsi_91x_hal.c
index 01edf96..c4fb319 100644
--- a/drivers/net/wireless/rsi/rsi_91x_hal.c
+++ b/drivers/net/wireless/rsi/rsi_91x_hal.c

@@ -285,7 +285,6 @@ int rsi_send_data_pkt(struct rsi_common *common, struct sk_buff *skb)
 	struct skb_info *tx_params;
 	struct ieee80211_bss_conf *bss;
 	int status = -EINVAL;
-	u8 header_size;
 
 	if (!skb)
 		return 0;

@@ -298,7 +297,6 @@ int rsi_send_data_pkt(struct rsi_common *common, struct sk_buff *skb)
 	vif = info->control.vif;
 	bss = &vif->bss_conf;
 	tx_params = (struct skb_info *)info->driver_data;