Vulkan: remove deferFlushUntilEndRenderPass feature, always on This only applies to Qualcomm chipsets, the feature was already enabled for all other devices. It was previously causing a manhattan 3.0 perf regression on some Qualcomm devices, but my tests on S24 both with ANGLE trace manhattan_31 and running gfxbench manually do not show any obvious regression. It was also not expected that this would result in a regression. As we do not aim to improve perf on older devices, removing the feature altogether so that defers are always enabled. This change resulted in a change in gold images on these traces on pixel 4 bots: pokemon_masters_ex - text was missing and now is rendered street_fighter_iv_ce_frame86 - shadow was missing and now is rendered So it looks like the feature may have been working incorrectly. Bug: b/346378481 Change-Id: I2b0d15b89e11c67dea7c316a42bc807441c43b0a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5622115 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com>