Removing billing fields from woocommerce checkout page - http://shailan.com/4966/removing-billing-fields-from-woocommerce-checkout-page/

woo-remove-billing.php

<?php 
// woo-remove-billing.php | metinsaylan | 2015-03-15

// This filter removes billing fields from woocommerce checkout page.
// Usage:
//   You can include this file in your functions.php file, 
//   or you can copy and paste this filter to your functions.php file.

add_filter( 'woocommerce_checkout_fields' , 'custom_override_checkout_fields' );
function custom_override_checkout_fields( $fields ) {
    unset($fields['order']['order_comments']);
    unset($fields['shipping']);
    unset($fields['billing']['billing_company']);
    unset($fields['billing']['billing_address_1']);
    unset($fields['billing']['billing_address_2']);
    unset($fields['billing']['billing_city']);
    unset($fields['billing']['billing_postcode']);
    unset($fields['billing']['billing_country']);
    unset($fields['billing']['billing_state']);
    unset($fields['billing']['billing_phone']);
	
    // Setting placeholder texts for Email, Name and Last Name
    $fields['billing']['billing_email']['placeholder'] = "E-mail address";

    $fields['billing']['billing_first_name']['required'] = false;
    $fields['billing']['billing_first_name']['placeholder'] = "First name";
   
    $fields['billing']['billing_last_name']['required'] = false;
    $fields['billing']['billing_last_name']['placeholder'] = "Last name";
     
    // Setting form field classes
    $fields['billing']['billing_email']['class'] = array('form-row-wide');
    $fields['billing']['billing_first_name']['class'] = array('form-row-wide');
    $fields['billing']['billing_last_name']['class'] = array('form-row-wide');
	 
    return $fields;
}



?>