PHP - 删除包含特定文本的父级

HTML:

<div class="vm-customfield-cart">
     <span class="product-field-type-S">Some important text</span><br />
     <span class="product-field-type-S">Lorem ipsum dolor</span><br />
</div>

How to remove just span which contains text Lorem ipsum. Everything after Lorem ipsum can be variable, thats why i need to search jsut by Lorem ipsum.

My code looks like:

$dom = new DOMDocument;
$dom->loadHTML($html);
$xp = new DOMXPath($dom);

$spanNodeList = $xp->query("//*[contains(., 'Lorem ipsum')]");

foreach ($spanNodeList as $spanNode) {
    //I have no idea how to clean it out
}

End result should looks like:

<div class="vm-customfield-cart">
     <span class="product-field-type-S">Some important text</span><br />
</div>

Try

$spanNode->parentNode->removeChild($spanNode);