如何摆脱WPF中ListBox选中项的边框？

<Window.Resources>
    <Style x:Key="CustomListBoxStyle" TargetType="ListBox">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ListBox">
                    <Border Background="{TemplateBinding Background}"
                            BorderBrush="{TemplateBinding BorderBrush}"
                            BorderThickness="{TemplateBinding BorderThickness}">
                        <ScrollViewer>
                            <ItemsPresenter/>
                        </ScrollViewer>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>

<ListBox Style="{StaticResource CustomListBoxStyle}">
    <!-- ListBox的内容 -->
</ListBox>