Revert "If PlatformView has been removed use index (#23408)"

This reverts commit a4b1044.

src/Core/src/Handlers/Layout/LayoutHandler.Android.cs

@@ -57,19 +57,10 @@ public void Remove(IView child)
 			_ = PlatformView ?? throw new InvalidOperationException($"{nameof(PlatformView)} should have been set by base class.");
 			_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
 
-			if (child.Handler?.PlatformView is not null && child.ToPlatform() is View view)
+			if (child?.ToPlatform() is View view)
 			{
 				PlatformView.RemoveView(view);
 			}
-			else 
-			{
-				var targetIndex = VirtualView.GetLayoutHandlerIndex(child);
-
-				if(targetIndex < PlatformView.ChildCount)
-				{
-					PlatformView.RemoveViewAt(targetIndex);
-				}
-			}
 		}
 
 		static void Clear(LayoutViewGroup platformView)

src/Core/src/Handlers/Layout/LayoutHandler.Mac.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Microsoft.Maui.Handlers
+{
+	public partial class LayoutHandler : ViewHandler<ILayout, NSView>
+	{
+		protected override NSView CreateView()
+		{
+			return new NSView();
+		}
+	}
+}

src/Core/src/Handlers/Layout/LayoutHandler.Windows.cs

@@ -40,20 +40,10 @@ public void Remove(IView child)
 			_ = PlatformView ?? throw new InvalidOperationException($"{nameof(PlatformView)} should have been set by base class.");
 			_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
 
-			if (child.Handler?.PlatformView is not null && child.ToPlatform() is UIElement view)
+			if (child?.ToPlatform() is UIElement view)
 			{
 				PlatformView.Children.Remove(view);
 			}
-			else 
-			{
-				var targetIndex = VirtualView.GetLayoutHandlerIndex(child);
-
-				if(targetIndex < PlatformView.Children.Count)
-				{
-					var childToRemove = PlatformView.Children[targetIndex];
-					PlatformView.Children.Remove(childToRemove);
-				}
-			}
 		}
 
 		public void Clear()

src/Core/src/Handlers/Layout/LayoutHandler.iOS.cs

@@ -61,17 +61,10 @@ public void Remove(IView child)
 			_ = PlatformView ?? throw new InvalidOperationException($"{nameof(PlatformView)} should have been set by base class.");
 			_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
 
-			if (child.Handler?.PlatformView is not null && child.ToPlatform() is PlatformView childView)
+			if (child?.ToPlatform() is PlatformView childView)
 			{
 				childView.RemoveFromSuperview();
 			}
-			else 
-			{
-				var targetIndex = VirtualView.GetLayoutHandlerIndex(child);
-
-				if(targetIndex < PlatformView.Subviews.Length)
-					PlatformView.Subviews[targetIndex].RemoveFromSuperview();
-			}
 		}
 
 		public void Clear()

src/Core/tests/DeviceTests/Handlers/Layout/LayoutHandlerTests.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.Maui.DeviceTests.Stubs;
 using Microsoft.Maui.Handlers;
@@ -76,30 +75,6 @@ public async Task HandlerRemovesChildFromNativeLayout()
 			Assert.Equal(0, count);
 		}
 
-		[Fact(DisplayName = "Removing Child with DisconnectedHandler doesn't crash")]
-		public async Task RemovingChildWithDisconnectedHandlerDoesntCrash()
-		{
-			var layout = new LayoutStub();
-			var slider = new SliderStub();
-			var slider2 = new SliderStub();
-			layout.Add(slider);
-			layout.Add(slider2);
-
-			slider.ZIndex = 1;
-			slider2.ZIndex = 0;
-
-			var handler = await CreateHandlerAsync(layout);
-
-			var count = await InvokeOnMainThreadAsync(() =>
-			{
-				slider.Handler.DisconnectHandler();
-				handler.Invoke(nameof(ILayoutHandler.Remove), new LayoutHandlerUpdate(0, slider));
-				return GetNativeChildren(handler).First() == ((IPlatformViewHandler)slider2.Handler).PlatformView;
-			});
-
-			Assert.True(count);
-		}
-
 		[Fact(DisplayName = "DisconnectHandler removes child from native layout")]
 		public async Task DisconnectHandlerRemovesChildFromNativeLayout()
 		{