Fix visualization title bug

[glenn-jocher]

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

🛠️ PR Summary

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🌟 Summary

Updated plotting functionality in the YOLOv5 visualization tools.

📊 Key Changes

• Removed the static title 'Features' from the feature visualization plots.

🎯 Purpose & Impact

• The removal of the generic title makes the plots cleaner and more focused on the content rather than redundant labeling.
• Users will benefit from a more minimalist visualization, which may be especially useful in custom applications where the title 'Features' might not be appropriate or informative.