Metal: Remove copy constructors in various util classes By using a different array initializer in RenderUtils, the copies are not neccessary. Bug: chromium:1329376 Change-Id: Iec98a31741457f8d76a84f0340772167d7b9700a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4607151 Reviewed-by: Quyen Le <lehoangquyen@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>