close akkadotnet#6280

Author: Aaronontheweb

src/core/Akka.Streams/Implementation/Fusing/Ops.cs

@@ -3817,19 +3817,7 @@ public override void OnDownstreamFinish()
                 _completionCts.Cancel();
                 _completionCts.Dispose();
 
-                try
-                {
-                    _enumerator.DisposeAsync().GetAwaiter().GetResult();
-                }
-                catch (Exception ex)
-                {
-                    Log.Warning(ex, "Failed to dispose IAsyncEnumerator asynchronously");
-                }
-                finally
-                {
-                    CompleteStage();
-                    base.OnDownstreamFinish();
-                }
+                CompleteStage();
                 base.OnDownstreamFinish();
             }