删除xml节点问题

Question

<?xml version="1.0" encoding="utf-8"?>
<Player>
  <!--播放文件路径-->
  <PlayerPath>
    <PathFile>E:\mp3\爱哭鬼.mp3</PathFile>
    <PathFile>E:\mp3\成者为王.mp3</PathFile>
    <PathFile>E:\mp3\虫儿飞 .MP3</PathFile>
    <PathFile>E:\mp3\菊花台.rm</PathFile>
    <PathFile>E:\mp3\昆明湖 .mp3</PathFile>
    <PathFile>E:\mp3\卖报歌.mp3</PathFile>
    <PathFile>E:\mp3\明天会更好.wma</PathFile>
    <PathFile>E:\mp3\茉莉花 .Wma</PathFile>
    <PathFile>E:\mp3\泼水歌.Wma</PathFile>
    <PathFile>E:\mp3\千里之外.mp3</PathFile>
    <PathFile>E:\mp3\让我们荡起双浆.mp3</PathFile>
    <PathFile>E:\mp3\甜蜜的我爱你.mp3</PathFile>
    <PathFile>E:\mp3\蜗牛.wma</PathFile>
    <PathFile>E:\mp3\蜗牛与黄鹂鸟.wma</PathFile>
    <PathFile>E:\mp3\羽毛.wma</PathFile>
    <PathFile>E:\mp3\捉泥鳅.mp3</PathFile>
  </PlayerPath>
</Player>假设我知道PlayerPath节点下的PathFile节点的内容 E:\mp3\成者为王.mp3，那么怎么删除该节点呢？