While the SmartCue logo on the footer bar cannot be removed, you can certainly add your own text and Call to Actions (CTAs) to this space. Here's how you do it:
Open the demo you want to edit in the Builder.
Click on the gear ⚙️ icon located at the top right of the Builder screen.
Select 'Footer'.
Here, you can add titles and CTAs to your footer.
As you make changes, a preview will be shown so you can see how it looks before you save.
Remember to hit 'Save' once you're happy with your changes!