[fix] Fix a flake8 issu

Author: nabenabe0928

test/test_api/test_results_manager.py

@@ -13,7 +13,7 @@
 from smac.runhistory.runhistory import RunHistory, StatusType
 
 from autoPyTorch.api.base_task import BaseTask
-from autoPyTorch.api.results_manager import ResultsManager, SearchResults, STATUS2MSG, cost2metric
+from autoPyTorch.api.results_manager import ResultsManager, STATUS2MSG, SearchResults, cost2metric
 from autoPyTorch.metrics import accuracy, balanced_accuracy, log_loss