gh-90654: Remove unneeded blank line (GH-95044) (#95047)

(cherry picked from commit bd390ef)

Co-authored-by: Terry Jan Reedy <[email protected]>

Co-authored-by: Terry Jan Reedy <[email protected]>

Author: miss-islington

Lib/idlelib/NEWS.txt

@@ -29,7 +29,6 @@ What's New in IDLE 3.10.0
 Released on 2021-10-04
 =========================
 
-
 bpo-45193: Make completion boxes appear on Ubuntu again.
 
 bpo-40128: Mostly fix completions on macOS when not using tcl/tk 8.6.11