Yanking the Serializable, was a bug in the code introduced with OWB-344, now fixed.

git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/trunk@1481690 13f79535-47bb-0310-9956-ffa450edef68
forgot to yank import

git-svn-id: https://svn.apache.org/repos/asf/tomee/tomee/trunk@1481691 13f79535-47bb-0310-9956-ffa450edef68