To delete a wall corner in Infurnia, follow these steps:
Click on the corner you want to delete. The selected corner will be highlighted.
In the properties panel, click on the "Delete Corner" option.
When you delete a corner, all walls of which this corner was a part will also get deleted. This action effectively removes the corner and any connected walls from your design.
Make sure to double-check your design after deleting a corner to ensure that it aligns with your overall design intentions.