Revert "Representation of interceptor / handler properties are tagged."

This reverts part of the back merge in r16811 that includes r16471.

R=ulan@chromium.org
BUG=295423

Review URL: https://codereview.chromium.org/24235008

git-svn-id: https://v8.googlecode.com/svn/branches/3.20@16881 ce2b1a6d-e550-0410-aec6-3dcde31c8c00