unhook participate template

add_action( 'woocommerce_single_product_summary', 'custom_remove_template',10);

function custom_remove_template(){
    global $wc_lottery;
    remove_action( 'woocommerce_single_product_summary',  array( $wc_lottery->plugin_public , 'woocommerce_lottery_participate_template' ), 25 );
}