Revert "Split mac clang-format sha1 per architecture"

This reverts commit e2e53118d94fc4fe9cd8408a03b4e877d807c229.

Reason for revert: caused compilation failure https://ci.chromium.org/ui/p/chromium/builders/ci/mac-arm64-rel/21112/overview

Original change's description:
> Split mac clang-format sha1 per architecture
>
> In preparation for using clang-format binaries built in clang rolls
> which will result in per-arch clang-format executables, use different
> sha1 files per architecture.
>
> This updates the main chromium DEPS to use these, but many other
> subprojects' DEPS also need to be updated, which will happen in separate
> changes.
>
> Bug: 1286289
> Change-Id: If2ad03e30a84e3737f5e971332df0224f739264d
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3529420
> Reviewed-by: Nico Weber <thakis@chromium.org>
> Commit-Queue: Arthur Eubanks <aeubanks@google.com>
> Cr-Commit-Position: refs/heads/main@{#981824}

Bug: 1286289
Change-Id: Ifa1adf129e23ed4f55d4d53d8d0efe7d061b570b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3533054
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Guillaume Jenkins <gujen@google.com>
Owners-Override: Phillis Tang <phillis@chromium.org>
Commit-Queue: Phillis Tang <phillis@chromium.org>
Cr-Commit-Position: refs/heads/main@{#982276}
NOKEYCHECK=True
GitOrigin-RevId: 829a351395e1ec9b6d3704d893b5b68ef15add43
2 files changed