exclude more stuff from vulkan

src/video_core/vulkan_common/vulkan_instance.cpp

@@ -59,6 +59,8 @@ namespace {
     case Core::Frontend::WindowSystemType::Xcb:
         extensions.push_back(VK_KHR_XCB_SURFACE_EXTENSION_NAME);
         break;
+#elif defined(__OPENORBIS__)
+    // No vulkan
 #else
     case Core::Frontend::WindowSystemType::X11:
         extensions.push_back(VK_KHR_XLIB_SURFACE_EXTENSION_NAME);

src/video_core/vulkan_common/vulkan_surface.cpp

@@ -76,6 +76,8 @@ vk::SurfaceKHR CreateSurface(
             throw vk::Exception(VK_ERROR_INITIALIZATION_FAILED);
         }
     }
+#elif defined(__OPENORBIS__)
+    // No native
 #else
     if (window_info.type == Core::Frontend::WindowSystemType::X11) {
         const VkXlibSurfaceCreateInfoKHR xlib_ci{