Delete HAbnormalExit. It does more harm than good.

BUG=v8:2843
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/23462007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16406 ce2b1a6d-e550-0410-aec6-3dcde31c8c00