PDFBOX-2146: remove unused imports

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1603463 13f79535-47bb-0310-9956-ffa450edef68
PDFBOX-2146: revert debug test change that doesn't belong

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1603465 13f79535-47bb-0310-9956-ffa450edef68