qmi-device: simplify QMI over MBIM code
By treating timeouts the same way for normal QMI and QMI over MBIM, we can simplify the special handling of the transaction table that was present for MBIM devices before.
By treating timeouts the same way for normal QMI and QMI over MBIM, we can simplify the special handling of the transaction table that was present for MBIM devices before.