Remove a println left in

git-svn-id: https://svn.apache.org/repos/asf/cxf/trunk@1513959 13f79535-47bb-0310-9956-ffa450edef68
[CXF-5194] Testcase for validating header elements
Fix problem discovered of NOT validating outgoing headers.

git-svn-id: https://svn.apache.org/repos/asf/cxf/trunk@1513960 13f79535-47bb-0310-9956-ffa450edef68