1. Use ldapmodify with the LDIF delete directive to delete an attribute.
    $ bin/ldapmodify -h server.example.com -p 389 -D "cn=admin,dc=example,dc=com" \
      -w password
    dn: uid=user.2004,ou=People,dc=example,dc=com 
    changetype: modify 
    delete: employeeNumber