You can right click on the warning, choose quickfix and choose one of the following:
- Mark the associated raw classpath entry as a publish/export dependency.
- Exclude the associated raw classpath entry from the set of potential publish/export dependencies.
As you will not have eclipse publishing/exporting the project it is safe to exclude it. But either way it makes no difference
Step by step screenshots:
http://publib.boulder.ibm.com/infocenter/radhelp/v8/index.jsp?topic=/com.ibm.javaee.doc/topics/tlooseclasspath.html