Update tests/test_irradiance.py

Co-authored-by: Cliff Hansen <cwhanse@sandia.gov>

Author: Omesh37

tests/test_irradiance.py

@@ -1164,15 +1164,6 @@ def test_dirint_array_inputs():
     assert isinstance(result2, pd.Series)
     assert (result2 >= 0).all()
 
-    # single time point + use_delta_kt_prime=True → ValueError
-    times_single = pd.DatetimeIndex(['2023-06-21 12:00'], tz='UTC')
-    with pytest.raises(ValueError, match="requires at least two times"):
-        irradiance.dirint(
-            ghi=np.array([500.0]),
-            solar_zenith=np.array([45.0]),
-            times=times_single,
-            use_delta_kt_prime=True
-        )
 
     # single time point + use_delta_kt_prime=False → no error
     result3 = irradiance.dirint(