ath5k: remove unused ah_txq_isr_qtrig member from struct ath5k_hw

Remove unused ah_txq_isr_qtrig member from struct ath5k_hw (set in
ath5k_hw_get_isr() but never used anywhere).
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220110223021.17655-1-ps.report@gmx.net

drivers/net/wireless/ath/ath5k/ath5k.h

@@ -1398,7 +1398,6 @@ struct ath5k_hw {
 	u32			ah_txq_isr_txurn;
 	u32			ah_txq_isr_qcborn;
 	u32			ah_txq_isr_qcburn;
-	u32			ah_txq_isr_qtrig;
 
 	u32			*ah_rf_banks;
 	size_t			ah_rf_banks_size;

drivers/net/wireless/ath/ath5k/dma.c

@@ -723,11 +723,8 @@ ath5k_hw_get_isr(struct ath5k_hw *ah, enum ath5k_int *interrupt_mask)
 		}
 
 		/* A queue got triggered */
-		if (unlikely(pisr & (AR5K_ISR_QTRIG))) {
+		if (unlikely(pisr & (AR5K_ISR_QTRIG)))
 			*interrupt_mask |= AR5K_INT_QTRIG;
-			ah->ah_txq_isr_qtrig |= AR5K_REG_MS(sisr4,
-						AR5K_SISR4_QTRIG);
-		}
 
 		data = pisr;
 	}