This removes the ability to specify a catch prediction for exception
handler tables that are based on return addresses. The encoding for
handlers still looks the same to keep it in sync with tables based on
ranges, just no payload is stored in the respective bits.

R=yangguo@chromium.org

Review-Url: https://codereview.chromium.org/2205893002
Cr-Commit-Position: refs/heads/master@{#38327}