Remove page title

When I go to a product page (http://lendergifts.com/store/?model_number=HSH2), the text Home/Shop is there beneath the header. It is also in the shopping cart software (wp easycart). They are both hot links.

I want to remove the top one that Generate Press put there. I found a "snippet", but never have used that feature and firstly, don't know if it addresses what I am trying to accomplish and secondly, where to put it! Any help would be appreciated.

Is this what I want and if not what do I need and IF it is what I want, how and where do I put it...

generate_show_title

add_action( 'after_setup_theme', 'tu_remove_all_titles' );
function tu_remove_all_titles() {
add_filter( 'generate_show_title', '__return_false' );
}

thank you,