Update test_linearboost.py

Author: hamidkm9

tests/test_linearboost.py

@@ -1,9 +1,6 @@
-import pytest
 from sklearn.utils.estimator_checks import parametrize_with_checks
 from linearboost.linear_boost import LinearBoostClassifier
 
-from ._utils import check_estimator, get_expected_failed_tests
-
 
 @parametrize_with_checks([LinearBoostClassifier()])
 def test_sklearn_compatible_estimator(estimator, check):