Remove unused time_sync import

[glenn-jocher]

Signed-off-by: Glenn Jocher [email protected]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhanced YOLOv5 validation script for streamlined inference.

📊 Key Changes

• Removed time_sync function import from utils.torch_utils in the val.py script.

🎯 Purpose & Impact

• 🎯 Purpose: Streamlining the validation code by eliminating unnecessary utilities, potentially reducing clutter and confusion within the codebase.
• 💡 Impact: Users may experience a slight increase in clarity when navigating the validation script, although the change is minimal and may not have a noticeable impact on the end-user experience. Developers will have a cleaner codebase to work with, ensuring that only essential utilities are imported.