c/client: don't call vkQueueWaitIdle in client_vk_swapchain_destroy

Part-of: <https://gitlab.freedesktop.org/monado/monado/-/merge_requests/2531>

src/xrt/compositor/client/comp_vk_client.c

@@ -16,9 +16,6 @@
 
 #include "comp_vk_client.h"
 
-//! We are not allowed to touch the queue in xrDestroySwapchain
-#define BREAK_OPENXR_SPEC_IN_DESTROY_SWAPCHAIN (true)
-
 // Prefixed with OXR since the only user right now is the OpenXR state tracker.
 DEBUG_GET_ONCE_LOG_OPTION(vulkan_log, "OXR_VULKAN_LOG", U_LOGGING_INFO)
 
@@ -273,13 +270,6 @@ client_vk_swapchain_destroy(struct xrt_swapchain *xsc)
 	struct client_vk_compositor *c = sc->c;
 	struct vk_bundle *vk = &c->vk;
 
-	// Make sure images are not used anymore.
-	if (BREAK_OPENXR_SPEC_IN_DESTROY_SWAPCHAIN) {
-		os_mutex_lock(&vk->queue_mutex);
-		vk->vkQueueWaitIdle(vk->main_queue.queue);
-		os_mutex_unlock(&vk->queue_mutex);
-	}
-
 	for (uint32_t i = 0; i < sc->base.base.image_count; i++) {
 		if (sc->base.images[i] != VK_NULL_HANDLE) {
 			vk->vkDestroyImage(vk->device, sc->base.images[i], NULL);