rtc.data_models_aec: remove match validation for 'fecha_firma_dt' and 'fecha_cesion_dt'

The coincidence between the fields 'fecha_firma_dt' and
'fecha_cesion_dt' in a 'cesion' is not mentioned among
the validations that the SII performs to accept an AEC
XML Document, in fact, there are known cases of valid
AEC XML Documents where these fields do not have the same
date, with a slight difference of one second, but still,
the AEC is valid for the SII.
Ref. Instructivo Técnico Registro Público Electrónico de Transferencia
de Crédito (retrieved on 2021-03-03)
Source: (https://www.sii.cl/factura_electronica/ins_tecnico.pdf)

Author: ycouce-cdd

cl_sii/rtc/data_models_aec.py

@@ -746,7 +746,7 @@ def validate_last_cesion_matches_some_fields(
     ) -> Mapping[str, object]:
         field_validations: Sequence[Tuple[str, str]] = [
             # (AecXml field, CesionAecXml field):
-            ('fecha_firma_dt', 'fecha_cesion_dt'),
+            # ('fecha_firma_dt', 'fecha_cesion_dt'),
             ('cedente_rut', 'cedente_rut'),
             ('cesionario_rut', 'cesionario_rut'),
         ]

tests/test_rtc_data_models_aec.py

@@ -660,24 +660,18 @@ def test_validate_last_cesion_matches_some_fields(self) -> None:
             {
                 'loc': ('__root__',),
                 'msg':
-                    "'fecha_cesion_dt' of last 'cesion' must match 'fecha_firma_dt':"
-                    " datetime.datetime("
-                    "2019, 4, 5, 12, 57, 32,"
-                    " tzinfo=<DstTzInfo 'America/Santiago' -03-1 day, 21:00:00 DST>"
-                    ")"
+                    "'cedente_rut' of last 'cesion' must match 'cedente_rut':"
+                    " Rut('76389992-6')"
                     " !="
-                    " datetime.datetime("
-                    "2019, 4, 5, 12, 0, 32,"
-                    " tzinfo=<DstTzInfo 'America/Santiago' -03-1 day, 21:00:00 DST>"
-                    ").",
+                    " Rut('76598556-0').",
                 'type': 'value_error',
             },
         ]
 
         with self.assertRaises(pydantic.ValidationError) as assert_raises_cm:
             dataclasses.replace(
                 obj,
-                fecha_firma_dt=obj.fecha_firma_dt.replace(minute=0),  # Original minute is 57.
+                cedente_rut=obj.cesionario_rut,
             )
 
         validation_errors = assert_raises_cm.exception.errors()