Cleanup after iOS build fixes Bug: angleproject:6871 Change-Id: Ia5cd33c4532e10e61c1ca2c35d5190df97e36f5f Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3370867 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Yuly Novikov <ynovikov@chromium.org>