support running only damage assessments in R2D simulations

R2D does not explicitly specifies the desired outputs for regional
simulations. With this updated, we remove the request for loss results
when the auto-pop script does not specify loss simulations.

pelicun/tools/DL_calculation.py

@@ -722,6 +722,10 @@ def _parse_config_file(  # noqa: C901
                 regional_out_config['Settings']
             )
 
+        # if no loss simulation is requested, remove the corresponding outputs
+        if is_unspecified(config_ap, 'DL/Losses'):
+            update(config_ap, 'DL/Outputs/Loss', {})
+
         # save the extended config to a file
         config_ap_path = Path(config_path.stem + '_ap.json').resolve()