CU-8698ek477: Fix AdamW import (trf->torch)

Author: mart-r

medcat/utils/meta_cat/ml_utils.py

@@ -14,7 +14,8 @@
 from sklearn.metrics import classification_report, precision_recall_fscore_support, confusion_matrix
 from sklearn.model_selection import train_test_split
 from sklearn.utils.class_weight import compute_class_weight
-from transformers import AdamW, get_linear_schedule_with_warmup  # TODO: import from troch.optim instead
+from transformers import get_linear_schedule_with_warmup
+from torch.optim import AdamW
 
 
 import logging