Notwithstanding any other provision of this Constitution, the Legislature shall have power to release, rescind, cancel, or otherwise nullify in whole or in part any encumbrance on property, personal obligation, or other form of security heretofore or hereafter exacted or imposed by the Legislature to secure the repayment to, or reimbursement of, the State, and the counties or other agencies of the state government, of aid lawfully granted to and received by aged persons.