style: pre-commit fixes

Author: pre-commit-ci[bot]

tests/test_3690_to_dataframe_masked_string_dtype_resize.py

@@ -2,8 +2,6 @@
 
 from __future__ import annotations
 
-import pytest
-
 import awkward as ak
 
 
@@ -45,11 +43,9 @@ def test_masked_bytestring_array_with_option():
 def test_union_with_narrow_strings():
     """Test union arrays with narrow strings and None values."""
     # Test case from the existing test_union_to_record
-    unionarray = ak.Array([
-        {"x": "a", "y": 1.1},
-        {"y": 2.2, "z": "b"},
-        {"x": "c", "y": 3.3}
-    ])
+    unionarray = ak.Array(
+        [{"x": "a", "y": 1.1}, {"y": 2.2, "z": "b"}, {"x": "c", "y": 3.3}]
+    )
 
     df = ak.operations.to_dataframe(unionarray)