Remove code used for debugging in the configuration handler (a try/catch block)

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1520732 13f79535-47bb-0310-9956-ffa450edef68
Fix a potential concurrent modification exception

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1520733 13f79535-47bb-0310-9956-ffa450edef68