After python3 migration, the new print usage started causing leftover character
issues.

This CL fixes the print usage.

R=clemensh@chromium.org,neis@chromium.org
CC=machenbach@chromium.org

Bug: v8:8918
Change-Id: Ibee06677c3bae3e1141579693aa16a539309a566
Reviewed-on: https://chromium-review.googlesource.com/c/1495558
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59961}