Merge pull request pandas-dev#4753 from kjordahl/cleanup/redundant-splitter

CLN: Remove redundant call to get_splitter

Author: cpcloud

pandas/core/groupby.py

@@ -589,9 +589,6 @@ def get_iterator(self, data, axis=0, keep_internal=True):
         Generator yielding sequence of (name, subsetted object)
         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()