Revert "portage: ensure no "format not recognized""

This reverts commit 0b5bc9645f4068f7826b422a2dff4ea7a802098a.

Reason for revert: Sheriff: causes several builds to fail BuildPackages.

Original change's description:
> portage: ensure no "format not recognized"
>
> This change adds a hook to assert there is no "File format not
> recognized"-type errors in build logs, that may result from using
> objcopy/strip binaries built for a different architecture,
> or attempting to strip unstrippable binaries, such as firmware.
>
> BUG=chromium:1000931
> TEST=manual test
>
> Cq-Depend: chromium:2765723
> Change-Id: Ib022b54d0c4f1f22ebf733131b2eec227d539a6a
> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/portage_tool/+/2673629
> Tested-by: Sergey Frolov <sfrolov@google.com>
> Commit-Queue: Sergey Frolov <sfrolov@google.com>
> Reviewed-by: Mike Frysinger <vapier@chromium.org>

Bug: chromium:1000931
Change-Id: I5e118810a6bd11af571ff81c90491b18de5445d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/portage_tool/+/2785566
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Alain Michaud <alainm@chromium.org>
1 file changed