An Act amending the act of May 16, 1921 (P. L. 579, No. 262), entitled, as amended, "An act providing for the better management of the jails or county prisons in the several counties of this Commonwealth of the third, fourth, fifth classes and in certain counties of the sixth, *** and employment of prisoners and the government and management of said jails or county prisons," removing sheriffs and district attorneys from the prison board.