ath9k: Remove unused argument tsf from ath9k_hw_rxprocdesc

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c
index 0f90e15..7ddca67 100644
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -564,7 +564,7 @@
 EXPORT_SYMBOL(ath9k_hw_resettxqueue);
 
 int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
-			struct ath_rx_status *rs, u64 tsf)
+			struct ath_rx_status *rs)
 {
 	struct ar5416_desc ads;
 	struct ar5416_desc *adsp = AR5416DESC(ds);