Removes vertical flip: horizontal plus n*90 degree equivalent

Author: daniel-j-h

robosat/tools/train.py

@@ -17,7 +17,6 @@
 from robosat.transforms import (
     JointCompose,
     JointTransform,
-    JointRandomVerticalFlip,
     JointRandomHorizontalFlip,
     JointRandomRotation,
     ConvertImageMode,
@@ -185,7 +184,6 @@ def get_dataset_loaders(model, dataset):
             JointTransform(ConvertImageMode("RGB"), ConvertImageMode("P")),
             JointTransform(Resize(target_size, Image.BILINEAR), Resize(target_size, Image.NEAREST)),
             JointTransform(CenterCrop(target_size), CenterCrop(target_size)),
-            JointRandomVerticalFlip(0.5),
             JointRandomHorizontalFlip(0.5),
             JointRandomRotation(0.5, 90),
             JointRandomRotation(0.5, 180),