clean out Java 7 versions

We use Java 8 everywhere now.  No need to carry this version.

BUG=b:34530504
TEST=precq & sdk passes

Change-Id: I72a9a66c966cc2b6945cb186b6d61a3300cc953e
Reviewed-on: https://chromium-review.googlesource.com/527484
Commit-Ready: Ilja H. Friedel <ihf@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Ilja H. Friedel <ihf@chromium.org>
1 file changed