Remove unnecessary code.

Examples/visionOS/Example_visionOSApp.swift

@@ -8,33 +8,11 @@ import SwiftUI
 
 let logger = LBLogger.with("com.haishinkit.HaishinKit.visionOSApp")
 
-struct ContentStageConfiguration: CompositorLayerConfiguration {
-    func makeConfiguration(capabilities: LayerRenderer.Capabilities, configuration: inout LayerRenderer.Configuration) {
-        configuration.depthFormat = .depth32Float
-        configuration.colorFormat = .bgra8Unorm_srgb
-
-        let foveationEnabled = capabilities.supportsFoveation
-        configuration.isFoveationEnabled = foveationEnabled
-
-        let options: LayerRenderer.Capabilities.SupportedLayoutsOptions = foveationEnabled ? [.foveationEnabled] : []
-        let supportedLayouts = capabilities.supportedLayouts(options: options)
-
-        configuration.layout = supportedLayouts.contains(.layered) ? .layered : .dedicated
-    }
-}
-
 @main
 struct TestingApp: App {
     var body: some Scene {
         WindowGroup {
             ContentView()
         }
-
-        ImmersiveSpace(id: "ImmersiveSpace") {
-            CompositorLayer(configuration: ContentStageConfiguration()) { layerRenderer in
-                let renderer = Renderer(layerRenderer)
-                renderer.startRenderLoop()
-            }
-        }.immersionStyle(selection: .constant(.full), in: .full)
     }
 }