infra: Remove old TODO. Bug: angleproject:5114 Change-Id: I3b7255cc06bffd177f0b5ee8cad12bf2aad3089e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2885382 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org>