Hi,
I’m not sure I understand what you mean.
Did you mean the columns on the bottom of the page?
If so, try going to Dashboard > Customize > Appearance > WooCommerce > Product Catalog and set the Shop page Display and Category display to “show products” only.
If that doesn’t work, perhaps this is a custom template that needs a PHP snippet w/ conditions to not display subcategories.
A wise man once said:
"Have you cleared your cache?"