Section 11-322. Postponement or cancellation of sales

It shall be lawful for
  the  commissioner  of  finance,  or  his or her designee, to postpone or
  cancel any proposed sale of a tax lien or tax  liens  on  property  that
  shall  have  been  advertised  and noticed for sale prior to the date of
  sale. For purposes of this section, the words, "date of sale" shall have
  the same meaning provided in section 11-320(e) of this chapter. The city
  shall not be liable for any damages  as  a  result  of  cancellation  or
  postponement  of  a  proposed sale of a tax lien or tax liens, nor shall
  any cause of action arise from such cancellation or postponement.