Update tests/test_optimizer.py

Co-authored-by: Alexander Borzunov <hxrussia@gmail.com>

tests/test_optimizer.py

@@ -278,7 +278,6 @@ def test_progress_tracker():
     assert not tracker.is_alive()
 
     mean_step_time = sum(step_time_deltas) / len(step_time_deltas)
-    print(step_time_deltas, mean_step_time)
     for i in (0, 1, 5):  # Without the 4th worker (the fastest one)
         assert 1.05 * mean_step_time < step_time_deltas[i] < 2.0 * mean_step_time
     for i in (2, 3, 4):  # With the 4th worker