Fix double negative spotted by matt@mondoinfo.com

Doc/whatsnew/whatsnew20.tex

@@ -75,8 +75,8 @@ C. After getting approval on the python-dev mailing list, he launched
 into a flurry of checkins that lasted about a week, other developers
 joined in to help, and the job was done.  If there were only 5 people
 with write access, probably that task would have been viewed as
-``nice, but not worth the time and effort needed'' and it wouldn't
-never have been done.
+``nice, but not worth the time and effort needed'' and it would
+never have gotten done.
 
 SourceForge also provides tools for tracking bug and patch
 submissions, and in combination with the public CVS tree, they've