Bluetooth: Remove pointless parameter check in bluecard_hci_send_frame()

The hdev parameter of bluecard_hci_send_frame() is always valid. If it
were not valid, then it would have crashed earlier in the call chain.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

drivers/bluetooth/bluecard_cs.c

@@ -660,14 +660,7 @@ static int bluecard_hci_close(struct hci_dev *hdev)
 
 static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 {
-	bluecard_info_t *info;
-
-	if (!hdev) {
-		BT_ERR("Frame for unknown HCI device (hdev=NULL)");
-		return -ENODEV;
-	}
-
-	info = hci_get_drvdata(hdev);
+	bluecard_info_t *info = hci_get_drvdata(hdev);
 
 	switch (bt_cb(skb)->pkt_type) {
 	case HCI_COMMAND_PKT: