Remove configure_callbacks (#1647)

* Remove configure_callbacks

* Remove unused imports

torchgeo/trainers/base.py

@@ -8,7 +8,6 @@
 
 import lightning
 from lightning.pytorch import LightningModule
-from lightning.pytorch.callbacks import Callback, EarlyStopping, ModelCheckpoint
 from torch.optim import AdamW
 from torch.optim.lr_scheduler import ReduceLROnPlateau
 
@@ -36,17 +35,6 @@ def __init__(self) -> None:
         self.configure_metrics()
         self.configure_models()
 
-    def configure_callbacks(self) -> list[Callback]:
-        """Initialize model-specific callbacks.
-
-        Returns:
-            List of callbacks to apply.
-        """
-        return [
-            ModelCheckpoint(monitor=self.monitor, mode=self.mode),
-            EarlyStopping(monitor=self.monitor, mode=self.mode),
-        ]
-
     def configure_losses(self) -> None:
         """Initialize the loss criterion."""