Remove filtering observations with std_cutoff

src/ert/config/ert_config.py

@@ -906,7 +906,6 @@ def _create_observations(self) -> EnkfObs:
                 )
             obs_config_content = parse(obs_config_file)
             history = self.model_config.history_source
-            std_cutoff = self.analysis_config.observation_settings.std_cutoff
             time_len = len(obs_time_list)
             ensemble_config = self.ensemble_config
             config_errors: List[ErrorInfo] = []
@@ -919,7 +918,6 @@ def _create_observations(self) -> EnkfObs:
                                 ensemble_config,
                                 values,
                                 obs_name,
-                                std_cutoff,
                                 history,
                                 time_len,
                             )

src/ert/config/observations.py

@@ -95,7 +95,6 @@ def _handle_history_observation(
         ensemble_config: "EnsembleConfig",
         history_observation: HistoryValues,
         summary_key: str,
-        std_cutoff: float,
         history_type: HistorySource,
         time_len: int,
     ) -> Dict[str, ObsVector]:
@@ -151,14 +150,7 @@ def _handle_history_observation(
                 segment_instance,
             )
         data: Dict[Union[int, datetime], Union[GenObservation, SummaryObservation]] = {}
-        for i, (date, error, value) in enumerate(zip(refcase.dates, std_dev, values)):
-            if error <= std_cutoff:
-                ConfigWarning.ert_context_warn(
-                    "Too small observation error in observation"
-                    f" {summary_key}:{i} - ignored",
-                    summary_key,
-                )
-                continue
+        for date, error, value in zip(refcase.dates, std_dev, values):
             data[date] = SummaryObservation(summary_key, summary_key, value, error)
 
         return {