Make display name not-required on WooCommerce account edit page

A customer can edit their details from Account Details (edit account) page, under My Account section of WooCommerce. Customer can edit their first name, last name, display name, email address and password from there. These fields are all required, when someone tries to edit. Our goal is to make the display name not-required. We will use woocommerce_save_account_details_required_fields filter to achieve this.

function careless_wc_account_details_required_fields( $required_fields ){
    unset( $required_fields['account_display_name'] );
    return $required_fields;
}
add_filter( 'woocommerce_save_account_details_required_fields', 'careless_wc_account_details_required_fields' );

Code goes in the functions.php file of your active theme.