I presume you are referring to the line:
<xsd:include schemaLocation="http://www.ibm.com/webservices/xsd/j2ee_web_services_client_1_1.xsd"/>
You can find a copy of it here:
http://java.sun.com/xml/ns/j2ee/j2ee_web_services_client_1_1.xsd
The reference page I googled to find it.
http://java.sun.com/xml/ns/j2ee/
I don't know if you'll have much luck on this forum trying to get Sun's attention.
Mail them direct about it if you haven't already.
Or bug IBM.
Or just use a local copy of the xsd, and edit it yourself.