unnecessary empty cell in example notebook

You can see that at the end of this notebook: /notebooks/automatic_mask_generator_example.ipynb (https://github.com/facebookresearch/segment-anything/blob/main/notebooks/automatic_mask_generator_example.ipynb), there is an empty cell.

Please remove it.

Open notebooks/automatic_mask_generator_example.ipynb and inspect the final cell. Remove the empty cell, then reopen the notebook to confirm it ends with the intended example content and remains valid. Done means the notebook no longer contains the unnecessary trailing cell.

Written by the indexing model from the issue text.