Remove deprecated tasks

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

pmc_open_access_xml.py

@@ -27,7 +27,6 @@ from lxml import etree
 import json
 
 import datasets
-from datasets.tasks import LanguageModeling
 
 
 # TODO: Add BibTeX citation
@@ -456,7 +455,6 @@ class OpenAccessXML(datasets.GeneratorBasedBuilder):
             homepage=_HOMEPAGE,
             license=_LICENSE,
             citation=_CITATION,
-            task_templates=[LanguageModeling(text_column="content")],
         )
 
     def _split_generators(self, dl_manager):