Swift-PickerView 隐藏分割线

if #available(iOS 14.0, *) {
pickerView.subviews[1].backgroundColor = .clear
} else {
if pickerView.subviews.count >= 3 {
pickerView.subviews[1].isHidden = true
pickerView.subviews[2].isHidden = true
}
}