diff --git a/nnunetv2/training/data_augmentation/custom_transforms/manipulating_data_dict.py b/nnunetv2/training/data_augmentation/custom_transforms/manipulating_data_dict.py
deleted file mode 100644
index 587acd721..000000000
--- a/nnunetv2/training/data_augmentation/custom_transforms/manipulating_data_dict.py
+++ /dev/null
@@ -1,10 +0,0 @@
-from batchgenerators.transforms.abstract_transforms import AbstractTransform
-
-
-class RemoveKeyTransform(AbstractTransform):
-    def __init__(self, key_to_remove: str):
-        self.key_to_remove = key_to_remove
-
-    def __call__(self, **data_dict):
-        _ = data_dict.pop(self.key_to_remove, None)
-        return data_dict
diff --git a/nnunetv2/training/nnUNetTrainer/nnUNetTrainer.py b/nnunetv2/training/nnUNetTrainer/nnUNetTrainer.py
index c5b144a23..c709b6de6 100644
--- a/nnunetv2/training/nnUNetTrainer/nnUNetTrainer.py
+++ b/nnunetv2/training/nnUNetTrainer/nnUNetTrainer.py
@@ -50,12 +50,6 @@
 from nnunetv2.inference.sliding_window_prediction import compute_gaussian
 from nnunetv2.paths import nnUNet_preprocessed, nnUNet_results
 from nnunetv2.training.data_augmentation.compute_initial_patch_size import get_patch_size
-from nnunetv2.training.data_augmentation.custom_transforms.cascade_transforms import ApplyRandomBinaryOperatorTransform, \
-    RemoveRandomConnectedComponentFromOneHotEncodingTransform
-from nnunetv2.training.data_augmentation.custom_transforms.region_based_training import \
-    ConvertSegmentationToRegionsTransform
-from nnunetv2.training.data_augmentation.custom_transforms.transforms_for_dummy_2d import Convert2DTo3DTransform, \
-    Convert3DTo2DTransform
 from nnunetv2.training.dataloading.data_loader_2d import nnUNetDataLoader2D
 from nnunetv2.training.dataloading.data_loader_3d import nnUNetDataLoader3D
 from nnunetv2.training.dataloading.nnunet_dataset import nnUNetDataset