removing note from v0.21 whatsnew (in v0.20.3 now)

erbian · ian erb · commit 8b0ee0db85f5 · 2017-07-02T20:27:16.000-04:00
diff --git a/doc/source/whatsnew/v0.21.0.txt b/doc/source/whatsnew/v0.21.0.txt
@@ -121,8 +121,6 @@ Sparse
 Reshaping
 ^^^^^^^^^
 
-- Fixed failing ``PeriodIndex.join`` join method due to attempt to call sort method (:issue: `16541`) 
-
 
 Numeric
 ^^^^^^^
