There’s a post here that might help RW 8 - Artful Banner text - #2 by teefers
In the YouTube video, skip to the 1:15 mark where it shows how to open the Page Inspector. Follow along and if you scroll down in the Page Inspector you should see an option to hide the banner. This is on a per page basis. If you need to hide the banner site wide, you can do that via the project file >> Settings >> Master Style >> Scroll down to the Banner section and select the Hide box.