How to Hide GoWP Better WooCommerce Store Notices Admin Menus

function plt_hide_gowp_better_woocommerce_store_notices_menus() {
	//Hide the "Store Notices" menu.
	remove_menu_page('edit.php?post_type=bwcsn_shop_notice');
	//Hide the "Store Notices → Store Notices" menu.
	remove_submenu_page('edit.php?post_type=bwcsn_shop_notice', 'edit.php?post_type=bwcsn_shop_notice');
	//Hide the "Store Notices → Add New" menu.
	remove_submenu_page('edit.php?post_type=bwcsn_shop_notice', 'post-new.php?post_type=bwcsn_shop_notice');
}

add_action('admin_menu', 'plt_hide_gowp_better_woocommerce_store_notices_menus', 15);

Where do I put this code?