Profile: PASSWORD_VERIFY_FUNCTION

Hi,

After running utlpwdmg.sql, verify_function function was created and the default profile's PASSWORD_VERIFY_FUNCTION was assigned verify_function.

How do I revert this modification?

I encountered error while trying to do the following:
Alter profile default limit
password_verify_function unlimited;

ALTER PROFILE profile_name LIMIT PASSWORD_VERIFY_FUNCTION {plsql_function | NULL | DEFAULT}