Revert "Bluetooth: btusb: Disable runtime suspend on Realtek devices"

This reverts commit 7ecacafc24.

Testing this change on a board with RTL8822CE, I found that enabling
autosuspend has no effect on the stability of the system. The board
continued working after autosuspend, suspend and reboot.

The original commit makes it impossible to enable autosuspend on working
systems so it should be reverted. Disabling autosuspend should be done
via module param or udev in userspace instead.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Acked-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/btusb.c

@@ -4086,10 +4086,6 @@ static int btusb_probe(struct usb_interface *intf,
 			set_bit(BTUSB_USE_ALT1_FOR_WBS, &data->flags);
 		else
 			bt_dev_err(hdev, "Device does not support ALT setting 1");
-
-		err = usb_autopm_get_interface(intf);
-		if (err < 0)
-			goto out_free_dev;
 	}
 
 	if (!reset)