How to remove Website field in comments

@Keith: There is no option to remove website field in the comments. It’s from the WordPress Comment. For this you need to build child theme, for child theme check out http://catchthemes.com/blog/create-child-theme-wordpress/ and add the following code in child theme functions.php file:

/**
 * Altering Comment Form Fields
 * @uses comment_form_default_fields filter
 */
function adventurous_comment_form_fields( $fields ) {

	unset( $fields['url'] );
	return $fields;
}
add_filter( 'comment_form_default_fields', 'adventurous_comment_form_fields' );