Revert the Metal Experiment (#701)

Metal sounded like a good idea to get in the emulator but frankly I
underestimated just how experimental and not ready it was.
From my write up in the Discord:
```
As is, Metal supports only a few games.
The games it does support freeze on first use of not playing them via Vulkan, because shader translation is broken.
So you need to use a dirty hack to not delete all your shaders.
Not to mention it breaks many games via MoltenVK because of changes to the shared GPU code.

Merging Metal seemed like a great idea, because of the few games it does support.
But I don't think it's worth it. Many of the games it breaks via MoltenVK *don't work via Metal*. 
Which effectively makes current Ryubing worse for Mac users than Ryujinx 1.1.1403.

I think what I'm gonna do is revert Metal, and reopen it as a PR. That way, you can still take advantage of the Metal backend as is, but without making other games worse with no solution.
```

For what it's worth, the shader translation part could at least be
"fixed" by always applying a 30ms delay for shader translation to Metal.
That being said, that solution sucks ass.
The MoltenVK regressions are even worse.



I hope this is not a let down to the Mac users. I hope you realize I'm
reverting this because you're actively getting a worse experience with
it in the emulator.

src/Ryujinx/UI/ViewModels/MainWindowViewModel.cs

@@ -141,7 +141,8 @@ namespace Ryujinx.Ava.UI.ViewModels
         // For an example of this, download canary 1.2.95, then open the settings menu, and look at the icon in the top-left.
         // The border gets reduced to colored pixels in the 4 corners.
         public static readonly Bitmap IconBitmap =
-            new(Assembly.GetAssembly(typeof(MainWindowViewModel))!.GetManifestResourceStream("Ryujinx.Assets.UIImages.Logo_Ryujinx_AntiAlias.png")!);
+            new(Assembly.GetAssembly(typeof(MainWindowViewModel))!
+                .GetManifestResourceStream("Ryujinx.Assets.UIImages.Logo_Ryujinx_AntiAlias.png")!);
 
         public MainWindow Window { get; init; }
 
@@ -1574,7 +1575,7 @@ namespace Ryujinx.Ava.UI.ViewModels
 
             PrepareLoadScreen();
 
-            RendererHostControl = new RendererHost(application.Id.ToString("X16"));
+            RendererHostControl = new RendererHost();
 
             AppHost = new AppHost(
                 RendererHostControl,