fix direct push

I accidentally pushed to main, and forgot to import `calc_W`, so CI is now failing. This PR should fix the CI.

Author: oscardssmith

test/utility_tests.jl

@@ -1,5 +1,5 @@
 using StochasticDiffEq, LinearAlgebra, SparseArrays, Random, LinearSolve, Test
-using StochasticDiffEq.OrdinaryDiffEq: WOperator, calc_W!
+using StochasticDiffEq.OrdinaryDiffEq: WOperator, calc_W!, calc_W
 using StochasticDiffEq.SciMLOperators: MatrixOperator
 
 @testset "Derivative Utilities" begin