MNT remove unused local var in sklearn.utils.estimator_checks.py (scikit-learn#31221)

Author: ChVeen

sklearn/utils/estimator_checks.py

@@ -889,7 +889,6 @@ def callback(
                 # as xfail.
                 check_result["status"] = "xfail"
             else:
-                failed = True
                 check_result["status"] = "failed"
 
             if on_fail == "warn":

sklearn/utils/tests/test_estimator_checks.py

@@ -1373,8 +1373,8 @@ def callback(
     expected_failed_checks = _get_expected_failed_checks(est)
     # This is to make sure we test a class that has some expected failures
     assert len(expected_failed_checks) > 0
-    with warnings.catch_warnings(record=True) as records:
-        logs = check_estimator(
+    with warnings.catch_warnings(record=True):
+        check_estimator(
             est,
             expected_failed_checks=expected_failed_checks,
             on_fail=None,