revert stride_shape override

pytorch3dunet/datasets/hdf5.py

@@ -87,11 +87,10 @@ def __init__(self, file_path, phase, slice_builder_config, transformer_config, r
             # compare patch and stride configuration
             patch_shape = slice_builder_config.get('patch_shape')
             stride_shape = slice_builder_config.get('stride_shape')
-            if patch_shape != stride_shape:
-                logger.warning(f'Patch shape and stride shape should be equal for optimal prediction performance,'
-                               f'but found patch_shape: {patch_shape} and stride_shape: {stride_shape} in the config!'
-                               f'Overriding stride_shape to match patch_shape!')
-                slice_builder_config['stride_shape'] = patch_shape
+            if sum(self.halo_shape) != 0 and patch_shape != stride_shape:
+                logger.warning(f'Found non-zero halo shape {self.halo_shape}. '
+                               f'In this case: patch shape and stride shape should be equal for optimal prediction '
+                               f'performance, but found patch_shape: {patch_shape} and stride_shape: {stride_shape}!')
 
         with h5py.File(file_path, 'r') as f:
             raw = f[raw_internal_path]