Should any section or provision of this chapter contained herein, or as amended, or the application thereof to any person or circumstance, hereinafter be declared by a court of competent jurisdiction to be invalid, such decision shall not affect the validity of this chapter as a whole, or any part thereof, other that the part so declared to be invalid. The Board of Trustees hereby declares that it would have enacted this chapter or the remainder thereof even if the invalidity of such section or provision or its application had been apparent.