 For removing the login step you need to uncheck the "Allow customers to log into an existing account during checkout" option on the <a href="{bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}1$s">WP Admin -> WooCommerce -> Settings -> Accounts</a> page. See <a href="{bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}2$s" target="_blank">this screenshot</a>.