Small change to fix wrong blittering

src/video_core/renderer_vulkan/renderer_vulkan.cpp

@@ -172,11 +172,7 @@ try
 
 RendererVulkan::~RendererVulkan() {
     scheduler.RegisterOnSubmit([] {});
-    scheduler.Finish();
-    {
-        std::scoped_lock lock{scheduler.submit_mutex};
-        void(device.GetLogical().WaitIdle());
-    }
+    void(device.GetLogical().WaitIdle());
 }
 
 void RendererVulkan::Composite(std::span<const Tegra::FramebufferConfig> framebuffers) {

src/video_core/renderer_vulkan/vk_blit_screen.cpp

@@ -31,11 +31,7 @@ BlitScreen::~BlitScreen() = default;
 
 void BlitScreen::WaitIdle() {
     present_manager.WaitPresent();
-    scheduler.Finish();
-    {
-        std::scoped_lock lock{scheduler.submit_mutex};
-        device.GetLogical().WaitIdle();
-    }
+    void(device.GetLogical().WaitIdle());
 }
 
 void BlitScreen::SetWindowAdaptPass() {