[ModelicaSystem.linearize] remove old check / use of file in current dir

Author: syntron

OMPython/ModelicaSystem.py

@@ -1481,10 +1481,6 @@ def linearize(self, lintime: Optional[float] = None, simflags: Optional[str] = N
         if not linear_file.exists():
             raise ModelicaSystemError(f"Linearization failed: {linear_file} not found!")
 
-        # support older openmodelica versions before OpenModelica v1.16.2 where linearize() generates "linear_model_name.mo" file
-        if not linear_file.exists():
-            linear_file = pathlib.Path(f'linear_{self._model_name}.py')
-
         # extract data from the python file with the linearized model using the ast module - this allows to get the
         # needed information without executing the created code
         linear_data = {}