net: iwlegacy: remove unused variable

Fix:

drivers/net/wireless/iwlegacy/4965.c: In function ‘il4965_post_associate’:
drivers/net/wireless/iwlegacy/4965.c:1751:25: warning: variable ‘conf’ set but
not used [-Wunused-but-set-variable]

seen when building allmodconfig on x86_64 with W=1 by removing the unused
variable.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlegacy/4965.c

@@ -1748,7 +1748,6 @@ static void
 il4965_post_associate(struct il_priv *il)
 {
 	struct ieee80211_vif *vif = il->vif;
-	struct ieee80211_conf *conf = NULL;
 	int ret = 0;
 
 	if (!vif || !il->is_open)
@@ -1759,8 +1758,6 @@ il4965_post_associate(struct il_priv *il)
 
 	il_scan_cancel_timeout(il, 200);
 
-	conf = &il->hw->conf;
-
 	il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 	il_commit_rxon(il);