This reverts commit 50802793.

Reason for revert: blocking v8 roll:
https://ci.chromium.org/ui/p/chromium/builders/try/fuchsia_x64/1301026/overview

Original change's description:
> [fuchsia] Migrate d8 to a component framework v2 Fuchsia component
>
> In the process, switch to using the Fuchsia GN SDK templates for
> building the component and package.
>
> Bug: v8:12589
> Change-Id: I9b5a82accb0da2067e83bc80d691133550ce82cd
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3879501
> Auto-Submit: Greg Thompson <grt@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Alexander Schulze <alexschulze@chromium.org>
> Reviewed-by: Victor Gomes <victorgomes@chromium.org>
> Commit-Queue: Greg Thompson <grt@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#83084}

Bug: v8:12589
Change-Id: I94ce2ef0e7cba5d39c8d18ca7dc7264289325e99
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3885079
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Adam Klein <adamk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83087}