Update restapi.py

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Improved Flask API for YOLOv5 model inference.

📊 Key Changes

• Simplified the inference results return statement in the predict function.
• Removed the unnecessary .autoshape() call during model loading.
• Minor comment and string formatting improvements for clarity and consistency.

🎯 Purpose & Impact

• 🚀 Increases code readability and efficiency by streamlining the process of generating inference results.
• ✨ Enhances the maintainability of the Flask API codebase with clearer comments and descriptions.
• 🔍 Users benefit from a cleaner API for custom deployments and potentially faster inference with the suggestion to reduce the input size.

[glenn-jocher]

@kalenmike small updates to the REST API. .autoshape() no longer needed (applied by default in current code).