64 Pa. Stat. § 7
All and every law or laws, act or acts of assembly, heretofore made and enacted by the legislature of the province of Pennsylvania, or such parts and clauses thereof, by which any right, title or claim, power or authority, is or are given or granted, ratified or established in the said proprietaries or any of them, their or any of their officers or servants, of, in or to any of the estates, lands or other hereditaments herein and hereby vested and confirmed, or meant to be hereby vested and confirmed in this commonwealth, for the use and benefit of the citizens thereof, or of, in or to the quit-rents and purchase money and arrearages thereof, or of, in or to any portion thereof herein and hereby released, discharged and abolished, or meant so to be, be and are hereby annulled, revoked and repealed.
64 P.S. § 7