These test were already being run more safely in the gold tests step.

Bug: angleproject:5977
Change-Id: I4fb1062926fcda19384835723555d0fab0b42aae
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2939469Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>