iwlwifi: remove sanity check

iwl_mac_beacon_update can only be called
when the operating mode is IBSS, so it
doesn't need to verify that again.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

drivers/net/wireless/iwlwifi/iwl-core.c

@@ -2252,11 +2252,6 @@ int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
 		return -EIO;
 	}
 
-	if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
-		IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
-		return -EIO;
-	}
-
 	spin_lock_irqsave(&priv->lock, flags);
 
 	if (priv->ibss_beacon)