misc: chore: Discard unused parameters

src/Ryujinx/UI/Views/Input/ControllerInputView.axaml.cs

@@ -124,7 +124,7 @@ namespace Ryujinx.Ava.UI.Views.Input
                         IKeyboard keyboard = (IKeyboard)viewModel.ParentModel.AvaloniaKeyboardDriver.GetGamepad("0"); // Open Avalonia keyboard for cancel operations.
                         IButtonAssigner assigner = CreateButtonAssigner(isStick);
 
-                        _currentAssigner.ButtonAssigned += (sender, e) =>
+                        _currentAssigner.ButtonAssigned += (_, e) =>
                         {
                             if (e.ButtonValue.HasValue)
                             {

src/Ryujinx/UI/Views/Input/KeyboardInputView.axaml.cs

@@ -65,7 +65,7 @@ namespace Ryujinx.Ava.UI.Views.Input
                             IKeyboard keyboard = (IKeyboard)viewModel.ParentModel.AvaloniaKeyboardDriver.GetGamepad("0"); // Open Avalonia keyboard for cancel operations.
                             IButtonAssigner assigner = CreateButtonAssigner();
 
-                            _currentAssigner.ButtonAssigned += (sender, e) =>
+                            _currentAssigner.ButtonAssigned += (_, e) =>
                             {
                                 if (e.ButtonValue.HasValue)
                                 {

src/Ryujinx/UI/Views/Input/MotionInputView.axaml.cs

@@ -47,7 +47,7 @@ namespace Ryujinx.Ava.UI.Views.Input
                 CloseButtonText = LocaleManager.Instance[LocaleKeys.ControllerSettingsClose],
                 Content = content,
             };
-            contentDialog.PrimaryButtonClick += (sender, args) =>
+            contentDialog.PrimaryButtonClick += (_, _) =>
             {
                 var config = viewModel.Config;
                 config.Slot = content._viewModel.Slot;

src/Ryujinx/UI/Views/Input/RumbleInputView.axaml.cs

@@ -43,7 +43,7 @@ namespace Ryujinx.Ava.UI.Views.Input
                 Content = content,
             };
 
-            contentDialog.PrimaryButtonClick += (sender, args) =>
+            contentDialog.PrimaryButtonClick += (_, _) =>
             {
                 var config = viewModel.Config;
                 config.StrongRumble = content._viewModel.StrongRumble;