RF: remove data_tag

Author: Ben Cipollini

nibabel/gifti/__init__.py

@@ -19,4 +19,4 @@
 
 from .giftiio import read, write
 from .gifti import (GiftiMetaData, GiftiNVPairs, GiftiLabelTable, GiftiLabel,
-                    GiftiCoordSystem, data_tag, GiftiDataArray, GiftiImage)
+                    GiftiCoordSystem, GiftiDataArray, GiftiImage)

nibabel/gifti/gifti.py

@@ -208,11 +208,6 @@ def _data_tag_element(dataarray, encoding, datatype, ordering):
     return data
 
 
-def data_tag(dataarray, encoding, datatype, ordering):
-    data = _data_tag_element(dataarray, encoding, datatype, ordering)
-    return xml.tostring(data, 'utf-8')
-
-
 class GiftiDataArray(xml.XmlSerializable):
 
     # These are for documentation only; we don't use these class variables