test_engine: shush linter complaint

Author: Samsagax

tests/python_package_test/test_engine.py

@@ -1542,7 +1542,7 @@ def test_string_serialized_params_retrieval(rng):
 
     assert(new_model.params) # Check not empty dict
     assert(new_model.params["boosting"] == "gbdt")
-    assert(new_model.params["deterministic"] == True)
+    assert(new_model.params["deterministic"])  # Linter doesn't like boolean compare
     assert(new_model.params["feature_contri"] == [0.5] * train_x.shape[1])
     assert(new_model.params["interaction_constraints"] == [[0, 1], [0]])
     assert(new_model.params["objective"] == "binary")