How to Hide Product Filter by WBW Admin Menus

function plt_hide_woo_product_filter_menus() {
	//Hide "WBW Product Filter".
	remove_menu_page('wpf-filters');
	//Hide "WBW Product Filter → Overview".
	remove_submenu_page('wpf-filters', 'admin.php?page=wpf-filters&tab=overview');
	//Hide "WBW Product Filter → Add New Filter".
	remove_submenu_page('wpf-filters', 'admin.php?page=wpf-filters&tab=woofilters#wpfadd');
	//Hide "WBW Product Filter → Show All Filters".
	remove_submenu_page('wpf-filters', 'admin.php?page=wpf-filters&tab=woofilters');
	//Hide "WBW Product Filter → Settings".
	remove_submenu_page('wpf-filters', 'admin.php?page=wpf-filters&tab=settings');
	//Hide "WBW Product Filter → Upgrade To Pro".
	remove_submenu_page('wpf-filters', 'https://woobewoo.com/plugins/woocommerce-filter/#license');
}

add_action('admin_menu', 'plt_hide_woo_product_filter_menus', 91);

Where do I put this code?