date of birth validation caused an error when editing an address i removed this error by commenting it out

ie
/* if (ACCOUNT_DOB == 'true') {
if (checkdate(substr(tep_date_raw($dob), 4, 2), substr(tep_date_raw($dob), 6, 2), substr(tep_date_raw($dob), 0, 4)) == false) {
$error = true;

$messageStack->add('checkout_payment', ENTRY_DATE_OF_BIRTH_ERROR);
}
} */

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