[MAC80211]: remove fake set_key() call

Remove adding a fake key with a NONE key algorithm for each
associated STA. If we have hardware with such TX filtering
we should probably extend the sta_table_notification()
callback with the sta information instead; the fact that
it's treated as a key for some atheros hardware shouldn't
bother the stack.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 684f928..d70140c 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -426,10 +426,7 @@
 static ieee80211_txrx_result
 ieee80211_tx_h_select_key(struct ieee80211_txrx_data *tx)
 {
-	if (tx->sta)
-		tx->u.tx.control->key_idx = tx->sta->key_idx_compression;
-	else
-		tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
+	tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
 
 	if (unlikely(tx->u.tx.control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
 		tx->key = NULL;