`get_dataset` fails with some

[VictorSanh]

Example: the loading of GEM/wiki_lingua subset id in promptsource fails, even though calling datasets.load_dataset("GEM/wiki_lingua", "id") works perfectly.
I suspect we can remove the logic with builder_instance and just use datasets.load_dataset

promptsource/promptsource/utils.py

Line 36 in d1f16cf

def get_dataset_builder(path, conf=None):

[tianjianjiang]

I suspect we can remove the logic with builder_instance and just use datasets.load_dataset

I believe so. (I wanted to propose this but wasn't sure why builder_instance was required.)