fix test

Author: oscardssmith

test/interface/wprototype_tests.jl

@@ -17,10 +17,8 @@ for prob in (prob_ode_vanderpol_stiff,)
             update_func = (old_val, u, p, t; dtgamma) -> dtgamma,
             accepted_kwargs = (:dtgamma,))
         transform_op = ScalarOperator(0.0;
-            update_func = (old_op, u, p, t; dtgamma, transform) -> transform ?
-                                                                   inv(dtgamma) :
-                                                                   one(dtgamma),
-            accepted_kwargs = (:dtgamma, :transform))
+            update_func = (old_op, u, p, t; dtgamma) -> inv(dtgamma),
+            accepted_kwargs = (:dtgamma,))
         W_op = -(I - gamma_op * J_op) * transform_op
 
         # Make problem with custom MatrixOperator jac_prototype