Revert "Reland "Add luci-go tool to be fetched via CIPD""

This reverts commit 4e4521b85960399cd22afe33dddaa4516c53f271.

Reason for revert: This broke the code search builder.

Reverting since everyone in the US is OOO, so this wouldn't be fixed for at least two days.

Bug: 860239

Original change's description:
> Reland "Add luci-go tool to be fetched via CIPD"
> 
> This is a reland of 3bcc71d83f6d9af93a7408fbea34f6d5f0185c03
> 
> Original change's description:
> > Add luci-go tool to be fetched via CIPD
> > 
> > Do not remove the adhoc mechanism on GCS that predates CIPD yet, as the recipes
> > need to be updated.
> > 
> > Change analyze to not ignore changes to isolate.
> > 
> > R=tandrii@chromium.org
> > 
> > Bug: 851596
> > Change-Id: Ic068db83dea4c3a0f17b55181de523b16c9838a5
> > Reviewed-on: https://chromium-review.googlesource.com/1097623
> > Commit-Queue: Andrii Shyshkalov <tandrii@chromium.org>
> > Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
> > Reviewed-by: John Budorick <jbudorick@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#569688}
> 
> Bug: 851596
> Change-Id: I27382d97370376dcca8110c9225c16dada182256
> Reviewed-on: https://chromium-review.googlesource.com/1125000
> Reviewed-by: John Budorick <jbudorick@chromium.org>
> Commit-Queue: Marc-Antoine Ruel <maruel@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#572435}

TBR=maruel@chromium.org,tandrii@chromium.org,ehmaldonado@chromium.org,jbudorick@chromium.org

Change-Id: Ia95f851c24fab175827fc2a7d5d1472713b909af
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 851596
Reviewed-on: https://chromium-review.googlesource.com/1125900
Reviewed-by: Marc-Antoine Ruel <maruel@chromium.org>
Commit-Queue: Marc-Antoine Ruel <maruel@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#572546}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 5f3f4779bbe0debc13f892264cd780bdb74b6871
3 files changed