Revert "feat: add ToAsyncEnumerable"

This reverts commit a5a938c.

Author: woutervanranst

src/WouterVanRanst.Utils/Extensions/IEnumerableExtensions.cs

@@ -1,6 +1,4 @@
-using System.Runtime.CompilerServices;
-
-namespace WouterVanRanst.Utils.Extensions;
+namespace WouterVanRanst.Utils.Extensions;
 
 public static class IEnumerableExtensions
 {
@@ -74,16 +72,4 @@ public static IEnumerable<T> DuplicatesBy<T, TKey>(this IEnumerable<T> collectio
             .Where(group => group.Count() > 1)
             .SelectMany(group => group);
     }
-
-    public static async IAsyncEnumerable<T> ToAsyncEnumerable<T>(this IEnumerable<T> source, [EnumeratorCancellation] CancellationToken cancellationToken = default)
-    {
-        foreach (var item in source)
-        {
-            cancellationToken.ThrowIfCancellationRequested();
-            yield return item;
-
-            // Give the scheduler a chance to run other work; keeps it truly async-friendly.
-            await Task.Yield();
-        }
-    }
 }