Re-add assertion to check for valid synchronisation primitives
Re-adds assertion that checked that valid synchronisation primitives were passed to vkAcquireNextImageKHR due to failing CTS tests that were breaking the Vulkan spec. After fixing the tests, the assertion is no longer necessary
Change-Id: Ic600714be4012575b6d7e4f568ea54cbf2e0ca4f Signed-off-by: Normunds Rieksts normunds.rieksts@arm.com