This reverts commit b022e825.

Reason for revert: Fails nosnap: https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20nosnap%20-%20debug/22761

Original change's description:
> [builtins] Verify Isolate compatibility with the embedded blob
> 
> Embedded builtins (= the embedded blob) have a few dependencies on the
> snapshot state. For instance, they require that metadata stored on
> builtin Code objects as well as the builtins constant table remain
> unchanged from mksnapshot-time. Embedders may violate these
> assumptions by accident, e.g. by loading a snapshot generated with
> different build flags, leading to seemingly unrelated failures later
> on.
> 
> This CL introduces an Isolate hash stored in the embedded blob which
> hashes relevant parts of builtin Code objects and the builtins
> constant table. It's verified in Isolate::Init in debug builds.
> 
> Bug: v8:8723
> Change-Id: Ifc9bdbe6f56ea67d8984f162afa73a3572cfbba8
> Reviewed-on: https://chromium-review.googlesource.com/c/1442641
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#59177}

TBR=sigurds@chromium.org,jgruber@chromium.org

Change-Id: I027ae2585bd06290ea3245b1fc23efba544eb470
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:8723
Reviewed-on: https://chromium-review.googlesource.com/c/1443059Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59179}