This reverts commit f24e9958.

Reason for revert: Speculative revert for https://bugs.chromium.org/p/chromium/issues/detail?id=981138

Original change's description:
> [snapshot] Add '.note.GNU-stack' marker section for ELF snapshots
>
> This snapshot adds a marker section to the output assembly of
> mksnapshot. Omitting this section can imply an executable stack, which
> can result in linker warnings.
>
> R=​jgruber@chromium.org
>
> Change-Id: I6f5dacb24de3a852faf6ce0caf18c32b499ba5a9
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1687669
> Commit-Queue: Simon Zünd <szuend@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#62504}

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

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: chromium:981138
Change-Id: Iad05bb8e4222d62db8266ae250d79a37259f3008
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1687416Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62534}