Fix 'Cannot write more than one result document to the same URI' error.

Transform was finding ComplexType elements without names. Task was
therefore trying to create two php files with the same empty name. This
is not allowed in XLST and results in the error message.

'Cannot write more than one result document to the same URI' error.

For reference the ComplexType elements where child elements that should
never have been found.

E.g

  <xs:ComplexType name="Correct"></xs:ComplextType>
  <xs:element>
    <xs:ComplexType name="Wrong"></xs:ComplextType>
  </xs:element>
Remove <xsl:message> element from XSL.