CLN: Remove redundant call to get_splitter

Author: Kelsey Jordahl

pandas/core/groupby.py

@@ -590,8 +590,6 @@ def get_iterator(self, data, axis=0, keep_internal=True):
         for each group
         """
         comp_ids, _, ngroups = self.group_info
-        splitter = get_splitter(data, comp_ids, ngroups, axis=axis,
-                                keep_internal=keep_internal)
         splitter = self._get_splitter(data, axis=axis,
                                       keep_internal=keep_internal)
         keys = self._get_group_keys()