headers: Update to Vulkan header version 1.1.91

Updated:
- `include/vulkan/vulkan.h`
- `include/vulkan/vulkan.hpp`
- `include/vulkan/vulkan_core.h`
- `registry/genvk.py`
- `registry/validusage.json`
- `registry/vk.xml`

include/vulkan/vulkan.h

@@ -39,12 +39,6 @@
 #endif
 
 
-#ifdef VK_USE_PLATFORM_MIR_KHR
-#include <mir_toolkit/client_types.h>
-#include "vulkan_mir.h"
-#endif
-
-
 #ifdef VK_USE_PLATFORM_VI_NN
 #include "vulkan_vi.h"
 #endif