[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

xarray/core/duck_array_ops.py

@@ -157,7 +157,7 @@ def isna(data: Any) -> bool:
     -------
         Whether or not the data is np.nan or pd.NA
     """
-    return data is pd.NA or data is np.nan  # noqa: PLW0177
+    return data is pd.NA or data is np.nan
 
 
 def isnull(data):