[Logs sample data] Removes a title from one of the visualizations (elastic#252446)

## Summary

Removes a title from a visualization

<img width="626" height="250" alt="image"
src="https://github.com/user-attachments/assets/456c9875-fafa-476d-84ee-cb1a50597c0f"
/>

The viz has a title metric but we don't want to show it to be aligned
with the rest

Author: stratoula