ath9k: remove obselete comments

the comments are obselete as the virtual wiphy support was removed from
the driver

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 5b4f053..7409402 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -1784,11 +1784,6 @@
 	struct ieee80211_rx_status *rxs;
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
-	/*
-	 * The hw can technically differ from common->hw when using ath9k
-	 * virtual wiphy so to account for that we iterate over the active
-	 * wiphys and find the appropriate wiphy and therefore hw.
-	 */
 	struct ieee80211_hw *hw = sc->hw;
 	struct ieee80211_hdr *hdr;
 	int retval;