It is not possible to remove the banner from a specific page. Banners are a site-wide feature. If you would like to have a bannerless page, here are a few workarounds that you can try:
You can upload a banner that is the same background color of your style which so that it blends in with the background. It will give the appearance that there is no banner on the page. You can change to a bannerless style such as NoFrills or SqueakyClean and upload a banner to the page(s) you would like to have a banner, using the Picture Widget. For more information, please see this tutorial: How do I add pictures to my site?
Here's another way. You can use one of the Responsive templates and remove the banner area. Then, you can use a Picture widget to create add a banner to all desired pages. If you're interested in doing this, here are the steps:
1. In your Sitebuilder, go to Style > Change Template.
2. Select Responsive.
3. Go to Style > Designer. Scroll down to the bottom and uncheck Display Banner.
4. If the option is not available, you can click on Banner Padding and check the box next to None.
The HTML code can be added to your page to remove the banner through the HTML widget. This is style-dependent and would require an HTML specialist to help you with this.
If you're interested in another option, please get in touch with Customer Support Team. We will refer you to our HTML specialist for further assistance.