forgot to remote expected warning

python/cudf/cudf/tests/test_column_accessor.py

@@ -362,9 +362,9 @@ def test_replace_level_values_MultiColumn():
     got = ca.rename_levels(mapper={"a": "f"}, level=0)
     check_ca_equal(expect, got)
 
-    with pytest.raises(UserWarning):
-        got = ca.rename_levels(mapper={"a": "f"})
-        check_ca_equal(expect, got)
+    # passing without level kwarg assumes level=0
+    got = ca.rename_levels(mapper={"a": "f"})
+    check_ca_equal(expect, got)
 
 
 def test_clear_nrows_empty_before():