removed outdated local-files-only option in lerobot.scripts.visualize…

[yingjiewei]

…_dataset

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[Copilot]

Pull Request Overview

This PR removes an outdated --local-files-only option from the documentation example for the lerobot.scripts.visualize_dataset command.

• Removes the --local-files-only parameter from the dataset visualization command example

[imstevenpmwork]

Superseded by: #2238