Revert "cbuildbot: enable deduping of uploaded symbols"

This reverts commit bbb594bee0ad61c67ff960ce7641750324c07211.

This is a bit flaky atm, so turn it off in the branch so we don't
break release builds.

BUG=chromium:355843
TEST=`./buildbot/run_tests` pass

Change-Id: Id358f6420ab57083856e61cb3467e6a3c8b10208
Reviewed-on: https://chromium-review.googlesource.com/198250
Reviewed-by: Yu-Ju Hong <yjhong@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed