Remove unnecessary comments

combo/data/dataset_readers/dataset_reader.py

@@ -67,19 +67,4 @@ class DatasetReader(IterableDataset):
         raise NotImplementedError
 
     def apply_token_indexers(self, instance: Instance) -> None:
-        """
-        If `Instance`s created by this reader contain `TextField`s without `token_indexers`,
-        this method can be overriden to set the `token_indexers` of those fields.
-        E.g. if you have you have `"source"` `TextField`, you could implement this method like this:
-        ```python
-        def apply_token_indexers(self, instance: Instance) -> None:
-            instance["source"].token_indexers = self._token_indexers
-        ```
-        If your `TextField`s are wrapped in a `ListField`, you can access them via `field_list`.
-        E.g. if you had a `"source"` field of `ListField[TextField]` objects, you could:
-        ```python
-        for text_field in instance["source"].field_list:
-            text_field.token_indexers = self._token_indexers
-        ```
-        """
         pass