CLN: dont consolidate in groupby (#34680)

jbrockmendel · web-flow · commit c860b4bd5a50 · 2020-06-09T18:21:37.000-04:00
diff --git a/pandas/core/groupby/groupby.py b/pandas/core/groupby/groupby.py
@@ -497,7 +497,6 @@ def __init__(
         self._selection = selection
 
         assert isinstance(obj, NDFrame), type(obj)
-        obj._consolidate_inplace()
 
         self.level = level
 
