Removing product nav bar from Adirondack theme

Site URL: http://www.cobaltartgallery.com/antiques-odds-and-ends

Just changed website to new template Adirondack, all is well except for on certain pages, where we display stock, at the top of the page it has a navigation bar, separate from the header navigation, that shows all of our pages. In some sections there are dozens of pages it has in the navigation bar, so it just looks like a mess. I've tried added code into the specific page "advanced" code section but nothing seems to work. The Site Styles only allows changes to be made, like colour and font, but no removal. 

I would love to keep this theme as it works great for everything else, so I'm hoping someone has a solution! 

I've attached screenshot below for example and highlighted the bar in red.

Hi. Can you share link to page in screenshot?