Revert "Update expectations for 031-class-attributes."
This reverts commit 32580ebd.
The original commit tracked OpenJDK behaviour, which we've decided
to revert because several apps depend on the value of Package.toString.
bug: 28057303
(cherry picked from commit ae490490)
Change-Id: If03b91aab42dfaa9c838434b9a28f73cd970e34b