ath11k: Remove some duplicate code

'ATH11K_HE_MCS_MAX' is 11, so these 2 blocks of code are exactly the same.
Remove the one that uses a hard-coded constant.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/a65952db7f4eb8aaaa654b77dcd4930482f5c49b.1624483438.git.christophe.jaillet@wanadoo.fr

drivers/net/wireless/ath/ath11k/dp_rx.c

@@ -1406,11 +1406,6 @@ ath11k_update_per_peer_tx_stats(struct ath11k *ar,
 	 * Firmware rate's control to be skipped for this?
 	 */
 
-	if (flags == WMI_RATE_PREAMBLE_HE && mcs > 11) {
-		ath11k_warn(ab, "Invalid HE mcs %d peer stats",  mcs);
-		return;
-	}
-
 	if (flags == WMI_RATE_PREAMBLE_HE && mcs > ATH11K_HE_MCS_MAX) {
 		ath11k_warn(ab, "Invalid HE mcs %d peer stats",  mcs);
 		return;