UIMA-3849 updated version to 5.6.0-SNAPSHOT in all poms

git-svn-id: https://svn.apache.org/repos/asf/uima/uima-as/trunk@1599657 13f79535-47bb-0310-9956-ffa450edef68
UIMA-3849 remove unnecessary println 

git-svn-id: https://svn.apache.org/repos/asf/uima/uima-as/trunk@1599662 13f79535-47bb-0310-9956-ffa450edef68