Revert "Reland "More tests for Union & Intersect""

Need to reproduce wrong result only occurring with ASAN.

TBR=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/236873002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20712 ce2b1a6d-e550-0410-aec6-3dcde31c8c00