style: apply pre-commit fixes to 03-classification-api-test.py

- Apply black formatter: remove unnecessary parentheses
- Fix end of file: remove extra blank line

Signed-off-by: Yossi Ovadia <yovadia@redhat.com>

Author: yossiovadia

e2e-tests/03-classification-api-test.py

@@ -132,9 +132,7 @@ def test_intent_classification(self):
 
             if not category_correct:
                 if is_placeholder:
-                    failure_message = (
-                        f"Classification failed: returned placeholder 'general' instead of '{test_case['expected_category']}'"
-                    )
+                    failure_message = f"Classification failed: returned placeholder 'general' instead of '{test_case['expected_category']}'"
                 else:
                     failure_message = (
                         f"Classification incorrect: expected '{test_case['expected_category']}', "
@@ -217,4 +215,3 @@ def test_batch_classification(self):
 
 if __name__ == "__main__":
     unittest.main()
-