clean in run command

csst_common/pipeline.py

@@ -171,7 +171,9 @@ class Pipeline:
 
     def clean_output(self):
         """Clean output directory."""
-        self.clean_directory(self.dir_output)
+        # self.clean_directory(self.dir_output)
+        # clean in run command
+        pass
 
     @staticmethod
     def clean_directory(d):