diff --git a/src/hdmf_zarr/backend.py b/src/hdmf_zarr/backend.py
index e8fd3d60..e209b8c0 100644
--- a/src/hdmf_zarr/backend.py
+++ b/src/hdmf_zarr/backend.py
@@ -1070,8 +1070,6 @@ def write_dataset(self, **kwargs):  # noqa: C901
             refs = list()
             type_str = list()
             for i, dts in enumerate(options['dtype']):
-                # TODO: This appears to be code to distinguish between region and object References
-                # and will be refactored/removed.
                 if self.__is_ref(dts['dtype']):
                     refs.append(i)
                     type_str.append({'name': dts['name'], 'dtype': 'object'})