Fix relative ROOT Pytorch Hub custom model bug

[glenn-jocher]

🛠️ PR Summary

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🌟 Summary

Enhancement of ROOT directory path handling in TensorFlow and YOLO model scripts.

📊 Key Changes

• Commented out the conversion of ROOT to a relative path in both tf.py and yolo.py.
• The ROOT directory variable now remains as an absolute path, as opposed to being converted to a relative path based on the current working directory.

🎯 Purpose & Impact

• This change could potentially resolve issues related to path handling, which can vary depending on the user's current working directory.
• Users may see improvements in the ease of importing and utilizing these models within different project structures.
• It simplifies the code by removing an operation that could cause confusion or path resolution errors in various environments. 🛠️🔍