MR671: Rename VK_STRUCTURE_TYPE_LAYER_* to ..LOADER_*
MR671: Rename VK_STRUCTURE_TYPE_LAYER_* to ..LOADER_*

Nothing to do.

https://gitlab.khronos.org/vulkan/vulkan/merge_requests/671

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools