[vulkan] Maintenance9 removal

src/video_core/vulkan_common/vulkan.h

@@ -22,16 +22,13 @@
 
 #include <vulkan/vulkan.h>
 
-// Define maintenance 7-9 extension names (not yet in official Vulkan headers)
+// Define maintenance 7-8 extension names
 #ifndef VK_KHR_MAINTENANCE_7_EXTENSION_NAME
 #define VK_KHR_MAINTENANCE_7_EXTENSION_NAME "VK_KHR_maintenance7"
 #endif
 #ifndef VK_KHR_MAINTENANCE_8_EXTENSION_NAME
 #define VK_KHR_MAINTENANCE_8_EXTENSION_NAME "VK_KHR_maintenance8"
 #endif
-#ifndef VK_KHR_MAINTENANCE_9_EXTENSION_NAME
-#define VK_KHR_MAINTENANCE_9_EXTENSION_NAME "VK_KHR_maintenance9"
-#endif
 
 // Sanitize macros
 #undef CreateEvent

src/video_core/vulkan_common/vulkan_device.cpp

@@ -1286,10 +1286,6 @@ void Device::RemoveUnsuitableExtensions() {
     // VK_KHR_maintenance8
     extensions.maintenance8 = loaded_extensions.contains(VK_KHR_MAINTENANCE_8_EXTENSION_NAME);
     RemoveExtensionIfUnsuitable(extensions.maintenance8, VK_KHR_MAINTENANCE_8_EXTENSION_NAME);
-
-    // VK_KHR_maintenance9
-    extensions.maintenance9 = loaded_extensions.contains(VK_KHR_MAINTENANCE_9_EXTENSION_NAME);
-    RemoveExtensionIfUnsuitable(extensions.maintenance9, VK_KHR_MAINTENANCE_9_EXTENSION_NAME);
 }
 
 void Device::SetupFamilies(VkSurfaceKHR surface) {

src/video_core/vulkan_common/vulkan_device.h

@@ -97,7 +97,6 @@ VK_DEFINE_HANDLE(VmaAllocator)
     EXTENSION(KHR, MAINTENANCE_3, maintenance3)                                                    \
     EXTENSION(KHR, MAINTENANCE_7, maintenance7)                                                    \
     EXTENSION(KHR, MAINTENANCE_8, maintenance8)                                                    \
-    EXTENSION(KHR, MAINTENANCE_9, maintenance9)                                                    \
     EXTENSION(NV, DEVICE_DIAGNOSTICS_CONFIG, device_diagnostics_config)                            \
     EXTENSION(NV, GEOMETRY_SHADER_PASSTHROUGH, geometry_shader_passthrough)                        \
     EXTENSION(NV, VIEWPORT_ARRAY2, viewport_array2)                                                \
@@ -884,11 +883,6 @@ public:
         return extensions.maintenance8;
     }
 
-    /// Returns true if the device supports VK_KHR_maintenance9.
-    bool IsKhrMaintenance9Supported() const {
-        return extensions.maintenance9;
-    }
-
     /// Returns true if the device supports UINT8 index buffer conversion via compute shader.
     bool SupportsUint8Indices() const {
         return features.bit8_storage.storageBuffer8BitAccess &&