The spec proposal has been updated to drop contributory binary
properties such as `Other_ID_Start` and `Other_ID_Continue`.

This patch reverts commit 26e5d012 and
adds tests to ensure these properties are not supported.

R=
BUG=v8:4743

Review-Url: https://codereview.chromium.org/2809143003
Cr-Commit-Position: refs/heads/master@{#44569}