This articles tells you how to delete a location from your location database.
Note: if you delete a location, it will also be deleted from the events that are linked.
Go to Locations in the menu on the left.
Type in the name of the location you want to delete.
Hover your mouse over the location address and you will find a bin icon to pop-up next to the LAT/LNG.
Click on the bin icon.
You will be asked if you are sure.
Click on the red button, if you want to delete the location.
Your location is now deleted.
If you deleted a location by accident, check out this article on how to retrieve it.