Remove unused import
Suppress warnings so the codebase is warning-free.

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1468355 13f79535-47bb-0310-9956-ffa450edef68
JENA-432 : Test case

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1468356 13f79535-47bb-0310-9956-ffa450edef68