Vulkan: Remove unused render pass closure reason Bug: angleproject:42266019 Change-Id: I1c516b88677d7c9d3e97e9fd7525cf727be50cc3 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5678940 Reviewed-by: Amirali Abdolrashidi <abdolrashidi@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Auto-Submit: Shahbaz Youssefi <syoussefi@chromium.org>