I just realized this is a duplicate, we still have amd64-generic-tot-chromium-pfq-informational, we need to remove this one.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/chromite/+/b03399812be54ad742e8cc396c0b07e681d79ef5

commit b03399812be54ad742e8cc396c0b07e681d79ef5
Author: Steven Bennetts <stevenjb@chromium.org>
Date: Wed Mar 22 16:24:18 2017

chromeos_config.py: Eliminate deprecated -gn builders

BUG= chromium:701604 
TEST=cbuildbot/chromeos_config_unittest

Change-Id: Iec3c0d45727e335de671d4d2aa569ac239827f6b
Reviewed-on: https://chromium-review.googlesource.com/457638
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Steven Bennetts <stevenjb@chromium.org>
Tested-by: Steven Bennetts <stevenjb@chromium.org>
Trybot-Ready: Steven Bennetts <stevenjb@chromium.org>

[modify] https://crrev.com/b03399812be54ad742e8cc396c0b07e681d79ef5/cbuildbot/config_dump.json
[modify] https://crrev.com/b03399812be54ad742e8cc396c0b07e681d79ef5/lib/config_lib.py
[modify] https://crrev.com/b03399812be54ad742e8cc396c0b07e681d79ef5/cbuildbot/chromeos_config.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/tools/build/+/d76e2fe4e437ac3208d1fa7be859c871d75efa83

commit d76e2fe4e437ac3208d1fa7be859c871d75efa83
Author: Steven Bennetts <stevenjb@chromium.org>
Date: Wed Mar 22 16:31:54 2017

Revert "CrOS: New Builder for chromiumos.chromium."

This reverts the CL that added
amd64-generic-tot-chromium-pfq-informational-gn

The -gn builders are now redundant since we only support GN
for chrome now..

This reverts commit 3a6cf2da51024774e3c79f17b0790039ec55d3e9.

BUG= 701604 

Change-Id: If5f027db4c88feb3e2412cc5cf7e0760e149a897
Reviewed-on: https://chromium-review.googlesource.com/457451
Commit-Queue: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>

[modify] https://crrev.com/d76e2fe4e437ac3208d1fa7be859c871d75efa83/masters/master.chromiumos.chromium/slaves.cfg
[modify] https://crrev.com/d76e2fe4e437ac3208d1fa7be859c871d75efa83/masters/master.chromiumos.chromium/master_chromium_cfg.py
[modify] https://crrev.com/d76e2fe4e437ac3208d1fa7be859c871d75efa83/masters/master.chromiumos/slave_pool.json