Bluetooth: Remove double check for BT_CONNECTED

The same check is done just before call l2cap_streaming_send()
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: NMat Martineau <mathewm@codeaurora.org>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

net/bluetooth/l2cap_core.c

@@ -1693,9 +1693,6 @@ static int l2cap_streaming_send(struct l2cap_chan *chan,
 
 	BT_DBG("chan %p, skbs %p", chan, skbs);
 
-	if (chan->state != BT_CONNECTED)
-		return -ENOTCONN;
-
 	skb_queue_splice_tail_init(skbs, &chan->tx_q);
 
 	while (!skb_queue_empty(&chan->tx_q)) {