This method hasn't been supported for a long time now (and besides, its
only for Rietveld).

R=agable@chromium.org, tandrii@chromium.org

Recipe-Manual-Change: infra
Change-Id: Ie6e63834dca67962db29f2cb407950ed85db55a7
Reviewed-on: https://chromium-review.googlesource.com/957832Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Reviewed-by: Aaron Gable <agable@chromium.org>
Commit-Queue: Robbie Iannucci <iannucci@chromium.org>