clang: Stop implicitly passing -Wl,--build-id to the linker.

We explicitly pass that in official builds now, and after we've built and
rolled in a compiler with this change here, we'll no longer ask the linker
to generate a build id in unofficial builds (where it's not needed), which
should speed up links a bit.

BUG=622775

Review-Url: https://codereview.chromium.org/2784423003
Cr-Original-Commit-Position: refs/heads/master@{#462898}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: d2b7120358af144734c354fb2f9679c2d5647b35
1 file changed