Revert "[wpt] Migrate `html/semantics/scripting-1/` coverage to headless shell"

This reverts commit 02f44a0527d52e3a91705111fa61609ce9d6b0e8.

Reason for revert: CI failures:
https://ci.chromium.org/ui/p/chromium/builders/ci/WebKit%20Linux%20ASAN/62449/overview
https://ci.chromium.org/ui/p/chromium/builders/ci/mac-skia-alt-arm64-rel-tests/4067/overview
https://ci.chromium.org/ui/p/chromium/builders/ci/mac-skia-alt-arm64-rel-tests/4068/overview

Original change's description:
> [wpt] Migrate `html/semantics/scripting-1/` coverage to headless shell
>
> See [0] and [1] for background. The test history [2] and CQ flakiness
> check suggest the tests consistently run as expected on the new runner
> and embedder.
>
> [0]: https://groups.google.com/a/chromium.org/g/blink-dev/c/JOu9l2hu1U8
> [1]: https://chromium.googlesource.com/chromium/src/+/HEAD/docs/testing/run_web_platform_tests.md
> [2]: https://ci.chromium.org/ui/p/chromium/test-search?q=headless_shell_wpt%2Fexternal%2Fwpt%2Fhtml%2Fsemantics%2Fscripting-1%2F
>
> Bug: 40927590
> Change-Id: I61b96621c4e778fcc857b6b4442529c0536ea1a0
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5980806
> Reviewed-by: Domenic Denicola <domenic@chromium.org>
> Commit-Queue: Jonathan Lee <jonathanjlee@google.com>
> Cr-Commit-Position: refs/heads/main@{#1376919}

Bug: 40927590
Change-Id: If00bc016fab81b9030f526373927107e5e5e4992
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5985270
Auto-Submit: Jonathan Lee <jonathanjlee@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1377018}