Update least_squares.jl

Author: ChrisRackauckas

test/least_squares.jl

@@ -1,4 +1,4 @@
-using SimpleNonlinearSolve, Random, LinearAlgebra, Test
+using SimpleNonlinearSolve, LinearAlgebra, Test
 
 true_function(x, θ) = @. θ[1] * exp(θ[2] * x) * cos(θ[3] * x + θ[4])
 
@@ -16,4 +16,4 @@ prob_oop = NonlinearLeastSquaresProblem{false}(loss_function, θ_init, x)
 sol = solve(prob_oop, SimpleNewtonRaphson())
 sol = solve(prob_oop, SimpleGaussNewton())
 
-@test norm(sol.resid) < 1e-12
+@test norm(sol.resid) < 1e-12