I'd be happy to provide some steps here to see if we can get those pages removed ASAP for you.
Firstly, you'll want to navigate to your Square Online Site Editor by selecting Website > Edit Site. Once you're in your Site Editor, you will see a dropdown menu at the top-left of the screen. Once selected, you'll see your page menu and if you hover over any of your pages, you will see the option to 'Delete page' by clicking the little trash can icon.