remove unsupported note

docs/users/jupyterlab/repo2docker/index.md

@@ -40,6 +40,4 @@ Jupyter-JSC offers **Repo2Docker ( Binder )**, which facilitates building Docker
 
 - **Description:** Optionally, provide the path to a specific notebook file within your repository, e.g. `notebooks/example.ipynb`, or a URL to open.
 - **Purpose:** If filled, the specified notebook will open automatically once the environment is launched, simplifying access to a main file.
-> This feature is currently not available.
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