Revert "Enable mold linker for non-official arm64 Android builds"

This reverts commit 846f170e11d676b9d3977801a2d653de13a8f52e.

Reason for revert: Build failure https://ci.chromium.org/ui/p/chromium/builders/ci/android-14-tablet-landscape-arm64-rel/9638/overview

Original change's description:
> Enable mold linker for non-official arm64 Android builds
>
> Bug: 40208899
> Change-Id: Ia030a91c3b55123e0ff3348f7f357852bd7e2aee
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7808330
> Auto-Submit: Andrew Grieve <agrieve@chromium.org>
> Reviewed-by: Sam Maier <smaier@google.com>
> Commit-Queue: Sam Maier <smaier@google.com>
> Cr-Commit-Position: refs/heads/main@{#1626147}

Bug: 40208899
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: Iabd6ba6f25c8122fae9efb858affb24ee5ca43a3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7823080
Reviewed-by: Steven Luong <stluong@chromium.org>
Owners-Override: Lily Chen <chlily@chromium.org>
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Lily Chen <chlily@chromium.org>
Commit-Queue: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1626220}
NOKEYCHECK=True
GitOrigin-RevId: faba9f2db5b5204c8ff713d9d17bc4227ca837a3