mac80211: removing shadowed sband

This patch removes doubly defined sband variable

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/tx.c

@@ -612,13 +612,10 @@ ieee80211_tx_h_misc(struct ieee80211_tx_data *tx)
 
 	if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
 	    (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT)) {
-		struct ieee80211_supported_band *sband;
 		struct ieee80211_rate *rate;
 		s8 baserate = -1;
 		int idx;
 
-		sband = tx->local->hw.wiphy->bands[tx->channel->band];
-
 		/* Do not use multiple retry rates when using RTS/CTS */
 		info->control.alt_retry_rate_idx = -1;