chore: remove claude.yml workflow file

[hf-security-analysis]

Removes .github/workflows/claude.yml workflow configuration.

We don't use Claude on Github so let's delete it to reduce surface attack.

cc @paulinebm

Closes huggingface/tracking-issues#260

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Note

Low Risk
Low risk since this only deletes an unused GitHub Actions workflow; the main impact is loss of the ability to trigger the Claude PR assistant via @claude comments.

Overview
Removes the .github/workflows/claude.yml GitHub Actions workflow that ran anthropics/claude-code-action when issues/PR comments or reviews contained @claude.

This reduces CI/automation surface area by eliminating the associated workflow triggers and permissions.

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[bot-ci-comment]

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[Wauplin]

@paulinebm we actually don't use this github action at all (Cursot bugbot is enough). So another solution to reduce attack surface is to simply delete this workflow file entirely