Revert "Allow embedded root automation peers."

This reverts commit 0e7b8f6f45. The code is in the wrong place.

src/Windows/Avalonia.Win32/Automation/RootAutomationNode.cs

@@ -33,7 +33,7 @@ namespace Avalonia.Win32.Automation
                 return null;
 
             var p = WindowImpl.PointToClient(new PixelPoint((int)x, (int)y));
-            var found = InvokeSync(() => GetPeerFromPoint(p));
+            var found = InvokeSync(() => Peer.GetPeerFromPoint(p));
             var result = GetOrCreate(found) as IRawElementProviderFragment;
             return result;
         }
@@ -101,15 +101,5 @@ namespace Avalonia.Win32.Automation
                 return result;
             }
         }
-
-        private AutomationPeer? GetPeerFromPoint(Point p)
-        {
-            var hit = Peer.GetPeerFromPoint(p);
-
-            while (hit != Peer && hit?.GetProvider<IRootProvider>() is { } embeddedRoot)
-                hit = embeddedRoot.GetPeerFromPoint(p);
-                
-            return hit;
-        }
     }
 }