The provisions of this subchapter shall remain in force and effect only for the duration of the public emergency with respect to the shortage of housing and business accommodations declared to exist by Ordinance of the Municipal Council of Saint Thomas and Saint John approved December 5, 1947 (Bill no. 92), which ordinance was made applicable throughout the Virgin Islands by section 13 of the Act of the Legislature approved March 31, 1955, Number 24. Upon declaration by Resolution or Act of the Legislature that such emergency has ceased to exist, the provisions of this subchapter shall have no further application.