buildbot: Remove --results-json-override-with-build-property usage.

Now https://chromium-review.googlesource.com/c/610632 has landed, we can
remove the --results-json-override-with-build-property arguments.

BUG=524758
R=qyearsley@chromium.org,dpranke@chromium.org,mcgreevy@chromium.org,jeffcarp@chromium.org

Change-Id: Ied45c85818e9014e37a61a0a6505dc8d648f9455
Reviewed-on: https://chromium-review.googlesource.com/616408
Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Tim 'mithro' Ansell <tansell@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#495030}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 7eefa7064d3705a7f780d726859e7e4ee0d2dab6
3 files changed