Revert of [es6] Ship new ES6 instanceof operator semantics. (patchset #1 id:1 of https://codereview.chromium.org/1820903002/ )

Reason for revert:
Breaks two layout tests when rolling into Chromium. Tests needs investigation and most likely a rebaseline. The following are the tests that fail:

- imported/web-platform-tests/html/semantics/text-level-semantics/the-time-element/001.html
- fast/dom/Window/window-postmessage-clone-deep-array.html

https://storage.googleapis.com/chromium-layout-test-archives/V8-Blink_Linux_64/5594/layout-test-results/results.html

Original issue's description:
> [es6] Ship new ES6 instanceof operator semantics.
>
> R=hablich@chromium.org
> BUG=v8:4447
> LOG=n
>
> Committed: https://crrev.com/5836807ea89b96ecfb4bbd8febf0d67bb8dae9ed
> Cr-Commit-Position: refs/heads/master@{#34984}

TBR=hablich@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4447

Review URL: https://codereview.chromium.org/1823813003

Cr-Commit-Position: refs/heads/master@{#34995}