Remove deprecated tasks

This dataset uses `tasks`, which are deprecated and will raise an error after the next release of `datasets`. See: https://github.com/huggingface/datasets/pull/6999

blbooks.py

@@ -19,7 +19,6 @@ from functools import lru_cache
 from typing import Dict, List
 
 import datasets
-from datasets.tasks import LanguageModeling
 
 
 _CITATION = """\
@@ -170,7 +169,6 @@ class BritishLibraryBooks(datasets.GeneratorBasedBuilder):
             supervised_keys=None,
             homepage="https://www.bl.uk/collection-guides/digitised-printed-books",
             citation=_CITATION,
-            task_templates=[LanguageModeling(text_column="text")],
         )
 
     def _split_generators(self, dl_manager: datasets.DownloadManager):