This reverts commit 6ebccbd1.

Reason for revert: Fails gc-stress: https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20gc%20stress/27313

Original change's description:
> [wasm] Deduplicate wasm scripts
>
> R=​clemensb@chromium.org
>
> Bug: v8:6847
> Change-Id: I4509a7011a0d32f5bbd2eabf3d2ee6ef5304263d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2124320
> Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#66981}

TBR=ulan@chromium.org,clemensb@chromium.org,thibaudm@chromium.org

Change-Id: I58e857d43b524115be3e29b9524794f05d631544
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6847
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2135730
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66982}