This reverts commit b49638c5.

Reason for revert: Buggy for avx2 and --no-enabled-sse4-2 (but avx is available on bots), see review comments for details.

Original change's description:
> [x64][ia32] Set lower SSE flags when newer extensions are enabled
>
> If SSE4.2 is enabled, all the previous extensions should also be
> enabled. In particular, you cannot have --enable-sse4_1 and
> --no-enable-sse3.
>
> Bug: chromium:1195579
> Change-Id: Id3e10db24cee2aee14449a77c9e7cff82e97edff
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2808621
> Reviewed-by: Andreas Haas <ahaas@chromium.org>
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#73840}

Tbr: ahaas@chromium.org,clemensb@chromium.org
Bug: chromium:1195579
Change-Id: Iabce159a82e8b71cbec8336091323f35e9aff16e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2818562Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#73885}