WooCommerce – remove payment method from emails

<?php // Do not include this if already open!

/**
* Code goes in theme functions.php.
*/
add_filter( 'woocommerce_get_order_item_totals', 'custom_woocommerce_get_order_item_totals' );

function custom_woocommerce_get_order_item_totals( $totals ) {
	unset( $totals['payment_method'] );
	return $totals;
}