[algorithms][models] code cleanup

beat/web/algorithms/models.py

@@ -316,7 +316,7 @@ class Algorithm(Code):
     def all_needed_dataformats(self):
         result = self.all_referenced_dataformats()
 
-        for dataformat in list(result):
+        for dataformat in result:
             result.extend(dataformat.all_needed_dataformats())
 
         return list(set(result))