Revert "Implement structural function and array types"

TBR=jarin@chromium.org
BUG=

Review URL: https://codereview.chromium.org/237963016

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20816 ce2b1a6d-e550-0410-aec6-3dcde31c8c00