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These arguments are unnecessary as they were only needed when milestones
were bucket-based to prevent filling the per-builder group consoles with
the branched versions of builders.

Change-Id: I114d30e197f8eaf2620ee18b3954e074cb200f15
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2583153
Auto-Submit: Garrett Beaty <gbeaty@chromium.org>
Reviewed-by: Stephen Martinis <martiniss@chromium.org>
Commit-Queue: Garrett Beaty <gbeaty@chromium.org>
Cr-Commit-Position: refs/heads/master@{#835702}