I can't seem to find out how to remove this image.
It is behind the row, but I don't know how to select it or edit it. Any ideas?
Have you tried right clicking on Row in the top left and edit design that way?
To clarify what the previous poster was saying...
Click the blue "row" menu (upper left side) and select "Edit Design". Go to Background IMAGE and there you can manage the background image settings including "Delete" it.
You can also check in the design tab on the left, and make sure you dont have a Background set for pages!