Regex replace total string
<p>I have and XML file with items that contain this string:</p>

<p><code>&lt;field name="itemid"&gt;xx&lt;/field&gt;</code></p>

<p>Where <code>xx</code> = a number from 50 to 250.</p>

<p>I need to remove the entire string from the whole file.</p>

<p>How would I do this with a Regex <code>replace</code>?</p>