Method ~PyA2

tests/test_virtual_functions.cpp:302–302

        PyA2() { py::print("PyA2.PyA2()"); }
        PyA2(const PyA2 &) = delete;
        ~PyA2() override { py::print("PyA2.~PyA2()"); }
        void f() override {
            py::print("PyA2.f()");
            PYBIND11_OVERRIDE(void, A2, f);