DOC: Whatsnew fixups (pandas-dev#16596)

Author: TomAugspurger

doc/source/whatsnew/v0.20.2.txt

@@ -1,14 +1,12 @@
 .. _whatsnew_0202:
 
-v0.20.2 (June 3, 2017)
+v0.20.2 (June 4, 2017)
 ----------------------
 
 This is a minor bug-fix release in the 0.20.x series and includes some small regression fixes,
 bug fixes and performance improvements.
 We recommend that all users upgrade to this version.
 
-Highlights include:
-
 .. contents:: What's new in v0.20.2
     :local:
     :backlinks: none