remove tutorials

[stephantul]

Does it what it says

[greptile-apps]

Confidence Score: 5/5

[Low risk] Removes tutorial notebooks and documentation.

The PR appears safe to merge and carries out the stated tutorial removal.

What we checked:

• Tutorial removal breaks builds: No retained code or settings reference the deleted files. Package settings include model2vec, and CI runs tests from tests.

_{Reviews (1) · Last reviewed commit: "remove tutorials" · Reviewed by Greptile}

[codecov]

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✅ All modified and coverable lines are covered by tests.

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