How to delete an infobox:
1. Click the blue edit next to the name
2. Find the green puzzle piece on the page
3. Put your mouse over it to make sure it says template: infobox
4. Click next to the puzzle piece
5. Hit the back space.
5. Click publish
On the page, you will see no infoboxes at all, but you can add a new infobox if needed.
You may also put the mouse over the green puzzle piece and click edit at the bottom.