Remove a couple of JDK 1.6-isms

Review at http://gwt-code-reviews.appspot.com/1178801

Review by: rchandia@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9340 8db76d5a-ed1c-0410-87a9-c151d255dfc7
2 files changed