Last night, our guest asked for breakfast, which I though t we hadn't listed. However, when I looked at our listing, under Amenities and More, breakfast was included, but thre seems to be no way to turn it off.
On a laptop or tablet, @Jane-And-Dale0, it is Host -> Hosting Dashboard -> Listings -> Manage Listing. Scroll down to Amenities and hit the Edit button. Then scroll down to Additional and hit the Edit button. Scroll down to Special Amenities, and there you will find Breakfast. Uncheck it.