Update hubconf.py to reset logging level to INFO

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhanced logging behavior for model creation in Ultralytics' YOLOv5.

📊 Key Changes

• Removed an unused variable that stored the LOGGER level.
• Adjusted LOGGER level setting to ensure it is reset to INFO after model creation if verbose is False.

🎯 Purpose & Impact

• Improves the readability and maintenance of the code by removing unnecessary lines.
• Ensures that users who want less verbose output (verbose=False) won't receive detailed logs after creating a model, reducing potential clutter in their logs.
• The change mainly impacts developers and users who want to control the verbosity of logging for better debugging and log management. 🤫🧹