Bluetooth/nokia: Remove unused struct 'hci_nokia_radio_hdr'

'hci_nokia_radio_hdr' looks like it was unused since it's
initial commit.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

drivers/bluetooth/hci_nokia.c

@@ -116,11 +116,6 @@ struct hci_nokia_neg_evt {
 #define SETUP_BAUD_RATE		921600
 #define INIT_BAUD_RATE		120000
 
-struct hci_nokia_radio_hdr {
-	u8	evt;
-	u8	dlen;
-} __packed;
-
 struct nokia_bt_dev {
 	struct hci_uart hu;
 	struct serdev_device *serdev;