OAK-939 - Removing modified node in different session leads to conflict

Fixing testcase failure. Newer testcase need to be ignored via @Ignore annotation and not via entry in pom.xml

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1510471 13f79535-47bb-0310-9956-ffa450edef68