Bug #4077: Remove include from user_pool.xsd

share/doc/xsd/user_pool.xsd

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"
   targetNamespace="http://opennebula.org/XMLSchema" xmlns="http://opennebula.org/XMLSchema">
-  <xs:include schemaLocation="user.xsd"/>
   <xs:element name="USER_POOL">
     <xs:complexType>
       <xs:sequence maxOccurs="1" minOccurs="1">