Thanks for reaching out today. I totally understand why you would want to remove the text given that it interrupts the header image. Depending on your theme that you are using, you should be able to remove this text within the theme editor.
From your Shopify admin you want to click **Online Store** > click **Themes** underneath. On the right side, you'll see a button that says **Customize**. Click on this button and you will see the different sections of the theme that you can edit on the left. The one you will want to look for is likely called Header, Slideshow, etc. Clicking on the section will allow you to edit it. In there, you will be able to edit that text.
Let me know if that helps!