Update Mimic4Dataset.py

Mimic4Dataset.py

@@ -9,7 +9,6 @@ from urllib.request import urlretrieve
 from sklearn.model_selection import train_test_split
 from sklearn.preprocessing import LabelEncoder
 import yaml
-from datasets import hf
 from .dataset_utils import create_vocab,gender_vocab,vocab, concat_data, generate_deep, generate_ml
 from .task_cohort import create_cohort, check_config_file