price: first option not must send the default value

0 Show Cost field on product entry form
1 Hide Cost field & Use default value below:
2 Show Cost field & Use default value below:

when set is on the first option the field value not must to used; is the 2options that those this;
is necessary remove or comment in the .module file the rows
for list_price cost sell_price

example rows for list_price
/*
default:
if ($class_settings['lp_settings'] && !$form['base']['prices']['list_price']['#default_value']) {
$form['base']['prices']['list_price']['#default_value'] = $class_settings['lp_settings'];
}
break;
*/