Update the notebook

* remove the `haystack_2` field from index.toml

Author: bilgeyucel

index.toml

@@ -216,6 +216,5 @@ notebook = "44_Creating_Custom_SuperComponents.ipynb"
 aliases = []
 completion_time = "20 min"
 created_at = 2025-04-17
-haystack_2 = true
 dependencies = ["sentence-transformers>=3.0.0", "datasets"]
 featured = true