dozen: Drop dzn_create_sync_for_memory()

It creates a dymmy sync so there's no point.

Acked-by: Daniel Stone <daniels@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36783>

src/microsoft/vulkan/dzn_device.c

@@ -2121,16 +2121,6 @@ dzn_queue_init(struct dzn_queue *queue,
    return VK_SUCCESS;
 }
 
-static VkResult
-dzn_device_create_sync_for_memory(struct vk_device *device,
-                                  VkDeviceMemory memory,
-                                  bool signal_memory,
-                                  struct vk_sync **sync_out)
-{
-   return vk_sync_create(device, &vk_sync_dummy_type,
-                         0, 1, sync_out);
-}
-
 static VkResult
 dzn_device_query_init(struct dzn_device *device)
 {
@@ -2298,7 +2288,6 @@ dzn_device_create(struct dzn_physical_device *pdev,
     * whole struct.
     */
    device->vk.command_dispatch_table = &device->cmd_dispatch;
-   device->vk.create_sync_for_memory = dzn_device_create_sync_for_memory;
    device->vk.check_status = dzn_device_check_status;
 
    device->dev = pdev->dev;