Revert "Pass -fuse-ld=bfd when use_mold=true"

This reverts commit 563140cf6ca268069f08ce02e791222ba4c7a8cc.

Reason for revert: Bot is still failing.

Original change's description:
> Pass -fuse-ld=bfd when use_mold=true
>
> This fixes builds for those use cog (not sure why it's not universal).
>
> clang++: error: invalid linker name in argument '--ld-path=../../buildtools/third_party/mold/mold_wrapper.py'
> build failed
>
> Bug: 40208899, 509543574
> Change-Id: Ifbcba1c3ac2fd5eeaaabc4bb3944ec5f4521f07b
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7813498
> Auto-Submit: Andrew Grieve <agrieve@chromium.org>
> Owners-Override: Andrew Grieve <agrieve@chromium.org>
> Reviewed-by: Sam Maier <smaier@google.com>
> Commit-Queue: Andrew Grieve <agrieve@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1626131}

Bug: 40208899, 509543574
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: I6b22a1784d14dfdf97645e86abfd371eab648d20
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7823180
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1626393}
NOKEYCHECK=True
GitOrigin-RevId: ec07156150cadfa079753feeb5ee0e775d04059a