title: how to delete Attribute in Xml
body: <p>Xml struture</p>
  
  <pre><code>&lt;soap-env:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"&gt;
      &lt;soapenv:Header&gt;
          &lt;mm7:id xmlns:mm7="http://schemas.xmlsoap.org/soap/envelope/" mustUnderstand="1"&gt;1234&lt;/mm7:id&gt;
      &lt;/soapenv:Header&gt;
      &lt;soap-env:Body&gt;
          &lt;SubmitReq&gt;
              &lt;number xmlns=""&gt;5674&lt;/number&gt;
          &lt;/SubmitReq&gt;
      &lt;/soap-env:Body&gt;
  &lt;/soapenv:Envelope&gt;
  </code></pre>
  
  <p>Coding</p>
  
  <pre><code>Dim bodychild As XmlElement = _xmlRequest.CreateElement("SubmitReq", "http://www.3gpp.org/ftp/Specs/archive/23_series/23.140/schema/REL-5-MM7-1-2")
          soapBody.AppendChild(bodychild)
          Dim numberAs XmlElement = _xmlRequest.CreateElement("number")
          number.InnerText = "5674"
          bodychild.AppendChild(number)
  </code></pre>
  
  <p>How to delete xmlns="" , I got try using RemoveAttribute and RemoveAttributeAt method but remove nothing. Isn't can remove it?</p>