Revert of Add IGNORE_DEPS_CHANGES flag and coverage builder.

Revert of Add IGNORE_DEPS_CHANGES flag and coverage builder. (patchset #3 id:40001 of https://codereview.chromium.org/2418233002/ )

Reason for revert:
Team says they don't need the builder that this supports, so remove the code.

Original issue's description:
> Add IGNORE_DEPS_CHANGES flag and coverage builder.
> 
> Add a flag to "chromium" recipe module to export the IGNORE_DEPS_CHANGES
> environment variable. Since this is used outside of the "build"
> repository, add a fake builder to exercise this option for coverage.
> 
> BUG=chromium:648308
> TEST=None
> 
> Committed: https://chromium.googlesource.com/chromium/tools/build/+/02bbb17974a70e1bb198ee4243d830ff258d1bb8

TBR=dpranke@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:648308
Committed: https://chromium.googlesource.com/chromium/tools/build/+/9f623ff560eeca917efb9b799a1ca3137f9dcaa0

[dnj, 2016-10-17 18:23:52]

The CQ bit was checked by dnj@chromium.org

[dnj, 2016-10-17 18:23:52]

Created Revert of Add IGNORE_DEPS_CHANGES flag and coverage builder.

[commit-bot: I haz the power, 2016-10-17 18:23:57]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-10-17 18:24:05]

Description was changed from

==========
Revert of Add IGNORE_DEPS_CHANGES flag and coverage builder. (patchset #3
id:40001 of https://codereview.chromium.org/2418233002/ )

Reason for revert:
Team says they don't need the builder that this supports, so remove the code.

Original issue's description:
> Add IGNORE_DEPS_CHANGES flag and coverage builder.
> 
> Add a flag to "chromium" recipe module to export the IGNORE_DEPS_CHANGES
> environment variable. Since this is used outside of the "build"
> repository, add a fake builder to exercise this option for coverage.
> 
> BUG=chromium:648308
> TEST=None
> 
> Committed:
https://chromium.googlesource.com/chromium/tools/build/+/02bbb17974a70e1bb198...

TBR=dpranke@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:648308
==========

to

==========
Revert of Add IGNORE_DEPS_CHANGES flag and coverage builder. (patchset #3
id:40001 of https://codereview.chromium.org/2418233002/ )

Reason for revert:
Team says they don't need the builder that this supports, so remove the code.

Original issue's description:
> Add IGNORE_DEPS_CHANGES flag and coverage builder.
> 
> Add a flag to "chromium" recipe module to export the IGNORE_DEPS_CHANGES
> environment variable. Since this is used outside of the "build"
> repository, add a fake builder to exercise this option for coverage.
> 
> BUG=chromium:648308
> TEST=None
> 
> Committed:
https://chromium.googlesource.com/chromium/tools/build/+/02bbb17974a70e1bb198...

TBR=dpranke@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:648308

Committed:
https://chromium.googlesource.com/chromium/tools/build/+/9f623ff560eeca917efb...
==========

[commit-bot: I haz the power, 2016-10-17 18:24:06]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/tools/build/+/9f623ff560eeca917efb...

[Dirk Pranke, 2016-10-17 18:24:36]

lgtm