Vulkan: Linked pipelines always need the layout A fix in the spec made it clear that the pipeline layout is always necessary when creating the linked pipeline. This change removes the comment that marks it as a driver workaround. Bug: angleproject:7369 Change-Id: I7d068d330a7517fbc6e064fe2e796c2c53f6b859 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4241397 Reviewed-by: Yuxin Hu <yuxinhu@google.com> Auto-Submit: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Yuxin Hu <yuxinhu@google.com>