Make LeakSanitizer happy, part 3.

Fixed a few more cctests and removed some which were broken for ages
and/or tested nothing useful anymore.

Note that cctests are now fully LeakSanitized (at least on x64)!

R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/157463002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19195 ce2b1a6d-e550-0410-aec6-3dcde31c8c00