An Act repealing the act of June 3, 1907 (P. L. 394, No. 285), entitled "An act supplementary to an act, entitled 'An act to provide for the personal registration of electors in cities of the first and second classes of this Commonwealth, to make such registration a condition of the right to vote in such cities, and to provide penalties for the violations of its provisions,' approved the seventeenth day of February, Anno Domini one thousand nine hundred and six; providing for the continuance in office of the registration commissioners of consolidated cities."