fix bad tests

This error found more bad tests than I would have expected!

Author: ChrisRackauckas

test/downstream/linearize.jl

@@ -312,7 +312,6 @@ matrices = linfun([1.0], Dict(p => 3.0), 1.0)
     @parameters p
     eqs = [0 ~ x * log(y) - p]
     @named sys = ODESystem(eqs, t; defaults = [p => 1.0])
-    sys = complete(sys)
     @test_nowarn linearize(
         sys, [x], []; op = Dict(x => 1.0), allow_input_derivatives = true)
 end

test/initial_values.jl

@@ -114,6 +114,6 @@ end
 @variables x(t)
 @parameters p
 @mtkbuild sys = ODESystem([D(x) ~ p], t; defaults = [x => t, p => 2t])
-prob = ODEProblem(structural_simplify(sys), [], (1.0, 2.0), [])
+prob = ODEProblem(sys, [], (1.0, 2.0), [])
 @test prob[x] == 1.0
 @test prob.ps[p] == 2.0

test/input_output_handling.jl

@@ -362,7 +362,6 @@ disturbed_input = ins[1]
     dist_integ,
     ins)
 
-augmented_sys = complete(augmented_sys)
 matrices, ssys = linearize(augmented_sys,
     [
         augmented_sys.u,

test/nonlinearsystem.jl

@@ -251,7 +251,6 @@ end
         0 ~ z - cos(x),
         0 ~ x * y]
     @named ns = NonlinearSystem(eqs, [x, y, z], [])
-    ns = complete(ns)
     vs = [unknowns(ns); parameters(ns)]
     ss_mtk = structural_simplify(ns)
     prob = NonlinearProblem(ss_mtk, vs .=> 1.0)

test/symbolic_events.jl

@@ -353,11 +353,11 @@ continuous_events = [[x ~ 0] => [vx ~ -vx]
      D(vx) ~ -9.8
      D(vy) ~ -0.01vy], t; continuous_events)
 
-ball = structural_simplify(ball)
+ball_split = structural_simplify(ball)
 ball_nosplit = structural_simplify(ball; split = false)
 
 tspan = (0.0, 5.0)
-prob = ODEProblem(ball, Pair[], tspan)
+prob = ODEProblem(ball_split, Pair[], tspan)
 prob_nosplit = ODEProblem(ball_nosplit, Pair[], tspan)
 
 cb = get_callback(prob)