Using Regex to remove anything within "<!--" and "/-->"
<p>Hey guys, I have a string like this:</p>

<blockquote>
  <p>Something useful (<strong>less than sign</strong>)!--?xml:namespace prefix = o ns =
  "urn:schemas-microsoft-com:office:office"
  /--(<strong>greater than sign</strong>) Other useful stuff</p>
</blockquote>

<p>I need to remove anything within the "". Is there an easy way to remove this using regex or a similar method?</p>
