xml vb.net : how to delete second child?

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VB

XML

I have this xml :

<un:casamae Id="1">
           <un:casafilha Id="1">
            <xn:telhado id="without records">
           </xn:telhado>
                <xn:telhado id="without records" modifier="create">
               <xn:composicao>
                 <xn:tipotelha>vermelho</xn:vsDataType>
                 <xn:numerotelhas>127</xn:vsDataFormatVersion>
                 <es:vermelho />
               </xn:composicao>
             </xn:telhado>
                <xn:muro id=256 modifier="create">
                </xn:muro>
           </un:casafilha>
           <un:casafilha Id="65501">
           </un:casafilha>

I want this :

<un:casamae Id="1">
           <un:casafilha Id="1">
                <xn:muro id=256 modifier="create">
                </xn:muro>
           </un:casafilha>
           <un:casafilha Id="65501">
           </un:casafilha>

This is the code I have so far:

doc2.Load(folder_dest & "\xpto.xml")
           For Each casafilha In casafihalist
               Dim xpathstring2 = "un:casamae//un:casafilha[@Id=" & casafilha & "]"
               Dim nodeselect2 As XmlNode = doc2.SelectSingleNode(xpathstring2, namespaces)
               For Each node As XmlNode In nodeselect2.SelectNodes("//xn:telhado[@id='without records']", namespaces)
                   node.ParentNode.RemoveChild(node)
               Next
           Next casafilha
           doc2.Save(folder_dest & "\xpto.xml")

The problem:
I've tried several solutions, but so far, I just being able of deleting the first chid xml with the "id" atribute equals "without records", leaving always the one with the id="without records" and modifier="create" behind.

How can I delete any kind of telhado id="without records" and their own subelements?