Remove ext model handli0ng from BaseModel

src/zfitwrapper/BaseModel.py

@@ -23,13 +23,11 @@ class BaseModel(ABC):
         self._modelparameters = {}  # type: Dict[str, zfit.Parameter]
         self._covariance = {}  # type: CovarianceType
         self._model = None  # type: Optional[zfit.core.basepdf.BasePDF]
-        self._ext_model = None  # type: Optional[Union[Union[zfit.core.basepdf.BasePDF,zfit.core.interfaces.ZfitPDF] , Fitparameter]]
 
     def __str__(self) -> str:
         string = "Model Wrapper"
         string += f"\nParameters:\n{self.parameters}"
         string += f"\nModel:\n{self.model}"
-        string += f"\nExtended Model:\n{self.ext_model}"
 
         return string
 
@@ -61,26 +59,6 @@ class BaseModel(ABC):
     def model(self) -> Optional[zfit.core.basepdf.BasePDF]:
         pass
 
-    @property
-    def ext_model(
-        self,
-    ) -> Optional[
-        Union[
-            Union[zfit.core.basepdf.BasePDF, zfit.core.interfaces.ZfitPDF], Fitparameter
-        ]
-    ]:
-        return self._ext_model
-
-    @ext_model.setter
-    def ext_model(self, param: Fitparameter) -> None:
-        assert self.model is not None
-
-        _yield = zfit.Parameter(**param.parameter_info_dict)
-        ext_model = self.model.create_extended(_yield)
-
-        self._ext_model = ext_model
-        self.modelparameters.update({str(_yield.name): _yield})
-
     def get_fitparameter(self, name: str) -> Fitparameter:
         OutputParameter = Fitparameter(name)
         if self.parameters: