remove not anymore needed cast

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-core/trunk@1428120 13f79535-47bb-0310-9956-ffa450edef68
remove not anymore needed cast

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-core/trunk@1428121 13f79535-47bb-0310-9956-ffa450edef68
no need of synchronized block here

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-core/trunk@1428123 13f79535-47bb-0310-9956-ffa450edef68