ipynb: Remove large trace under ipynb/deprecated/
This 90MB trace is not used anymore, so let's remove it. Future shallow clones will not pull it anymore, so it's still worth it even if it will stay forever in the repository.
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This 90MB trace is not used anymore, so let's remove it. Future shallow clones will not pull it anymore, so it's still worth it even if it will stay forever in the repository.