Remove N5X workaround in point size test. Bug: angleproject:2553 Change-Id: Id5db6517f86630cd7c6216af8a259399c827707d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3212569 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>