Section 1. The act, approved the twentieth day of May, one thousand nine hundred forty-nine (Pamphlet Laws 1531), entitled "An act requiring political subdivisions to file copies of building ordinances in the recorder's office; invalidating building ordinances heretofore adopted unless copies thereof are filed within a certain time; and imposing duties and conferring powers on recorders of deeds," and all acts amending said act are hereby repealed.