Remove duplicated test test_vectors_to_arrays_pandas_nan

pygmt/tests/test_clib_vectors_to_arrays.py

@@ -69,17 +69,6 @@ def test_vectors_to_arrays_not_c_contiguous():
     _check_arrays(arrays)
 
 
-def test_vectors_to_arrays_pandas_nan():
-    """
-    Test the vectors_to_arrays function with pandas Series containing NaNs.
-    """
-    vectors = [pd.Series(data=[0, 4, pd.NA, 8, 6], dtype=pd.Int32Dtype())]
-    arrays = vectors_to_arrays(vectors)
-    npt.assert_equal(arrays[0], np.array([0, 4, np.nan, 8, 6], dtype=np.float64))
-    assert arrays[0].dtype == np.float64
-    _check_arrays(arrays)
-
-
 @pytest.mark.skipif(not _HAS_PYARROW, reason="pyarrow is not installed.")
 def test_vectors_to_arrays_pyarrow_datetime():
     """