CAMEL-6208 clean up the code

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1461025 13f79535-47bb-0310-9956-ffa450edef68
Upgraded to slf4j 1.7.5

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1461029 13f79535-47bb-0310-9956-ffa450edef68