Fixed LINT issue

WillAyd · WillAyd · commit 8bf59dc0f7f7 · 2018-02-19T22:17:54.000-08:00
diff --git a/pandas/core/groupby.py b/pandas/core/groupby.py
@@ -1919,7 +1919,6 @@ def shift(self, periods=1, freq=None, axis=0):
                                            self.grouper, needs_ngroups=True,
                                            nperiods=periods)
 
-
     @Substitution(name='groupby')
     @Appender(_doc_template)
     def head(self, n=5):
