Delete setup.cfg

[glenn-jocher]

Cleanup after toml integration: setup.cfg no longer needed.

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Ultralytics makes a streamlined update to its code quality tools.

📊 Key Changes

• Removed the flake8 linting configuration and its related settings in .pre-commit-config.yaml and setup.cfg.
• Deleted the setup.cfg file entirely, suggesting a shift towards other configuration management methods.

🎯 Purpose & Impact

• 💡 Simplifies the tooling setup by removing potentially redundant or unused linting rules, reducing complexity.
• 🚀 Encourages consistency and clarity in the repository by possibly consolidating configurations into fewer files.
• 👩‍💻 Impacts developers by changing the tools and rules they use for checking code quality, possibly influencing the workflow.

(Note: While the diff provided changes related to code formatting standards and linting configurations, without specific PR context, it's assumed these changes are for simplification and maintenance purposes. Real-world impacts may vary based on broader project context.)