[misc] Remove extraneous debug messages

Author: dmitry-kabanov

tests/lang_python/test_ivp.py

@@ -213,21 +213,17 @@ def test_3__more_stringent_tolerances_lead_to_smaller_errors(self, s, p):
             assert errors[k - 1] >= errors[k]
 
     def test_4__check_that_user_data_can_be_used(self, s):
-        print("HERE 1")
         p = IVPProblemWithUserData()
-        print("HERE 2")
         s.set_initial_value(list(p.y0), int(p.t0))
         s.set_user_data((12, 2.7))
         s.set_rhs_fn(p.rhs)
         s.set_tolerances(1e-6, 1e-8)
-        print("HERE 3")
 
         t1 = p.t0 + 1
         times = np.linspace(p.t0, t1, num=11)
 
         for t in times[1:]:
             s.integrate(t)
-        print("HERE 4")
 
         final_value = s.y
         true_value = p.exact(t1)