Revert of Ensure that builders that use goma strip absolute paths by default. (patchset #1 id:1 of https://codereview.chromium.org/2837863005/ )

Reason for revert:
Reverting in case this is related to the goma errors in https://crbug.com/716089

Original issue's description:
> Ensure that builders that use goma strip absolute paths by default.
>
> This CL tweaks the MB configs so that any builder that is using goma
> also sets strip_absolute_paths_from_debug_symbols_by_default=true.
> This helps ensure that we get the best goma cache hit rate possible.
> We don't just make the default equal to use_goma=true because doing
> so may make it harder for devs to debug binaries, and we want devs
> to be able to both debug binaries and use goma by default; the
> tradeoff is that their builds are slightly slower.
>
> R=thakis@chromium.org, jochen@chromium.org
> BUG=603286, 712790
>
> Review-Url: https://codereview.chromium.org/2837863005
> Cr-Commit-Position: refs/heads/master@{#467574}
> Committed: https://chromium.googlesource.com/chromium/src/+/050dbe550d14e99ad4e83093d4f4e79642b9edc3

TBR=jochen@chromium.org,thakis@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=603286, 712790

Review-Url: https://codereview.chromium.org/2843403004
Cr-Original-Commit-Position: refs/heads/master@{#467769}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 999471957dc5cf51048b0b344c58925a2954d452
1 file changed