Revert "Enable distributed ThinLTO by default"

This reverts commit b0bcd5676046ae0a8486c230dee0a52bab6b935a.

Reason for revert: High load on Goma

Original change's description:
> Enable distributed ThinLTO by default
> 
> Distributed ThinLTO allows builds to complete in less wall time.
> Support has been added to use Goma to distribute code generation for
> ThinLTO. Distributed ThinLTO was previously off by default, but has
> now been enabled for almost all boards. This change enables
> distributed ThinLTO by default. What this means is that, after this
> change, a build that uses Goma and ThinLTO will use distributed
> ThinLTO, unless distributed ThinLTO is specifically disabled. Builds
> that don't use Goma or don't use ThinLTO are unaffected by the
> setting. Because almost all boards already have distributed ThinLTO
> enabled explicitly, the majority of builds are not affected by
> this change in default.
> 
> BUG=chromium:877722
> TEST=Tryjobs to verify that builds succeed and use distributed ThinLTO
> 
> Change-Id: Ibdd6f09c81d2d6c0cdee09ff7f221b9e90c804b9
> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2273762
> Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
> Tested-by: Bob Haarman <inglorion@chromium.org>
> Commit-Queue: Bob Haarman <inglorion@chromium.org>

Bug: chromium:877722
Change-Id: Ied0996e4ceda73fec4817ff2b35d82ad5a1cf690
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2284315
Reviewed-by: Bob Haarman <inglorion@chromium.org>
Reviewed-by: George Burgess <gbiv@chromium.org>
Tested-by: George Burgess <gbiv@chromium.org>
1 file changed