Remove 3.23.53 news section until 3.23.52 is tagged.

Docs/manual.texi

@@ -46868,7 +46868,6 @@ users use this code as the rest of the code and because of this we are
 not yet 100% confident in this code.
 
 @menu
-* News-3.23.53::                Changes in release 3.23.53
 * News-3.23.52::                Changes in release 3.23.52
 * News-3.23.51::                Changes in release 3.23.51
 * News-3.23.50::                Changes in release 3.23.50
@@ -46925,13 +46924,7 @@ not yet 100% confident in this code.
 * News-3.23.0::                 Changes in release 3.23.0
 @end menu
 
-@node News-3.23.53, News-3.23.52, News-3.23.x, News-3.23.x
-@appendixsubsec Changes in release 3.23.53
-
-@itemize @bullet
-@end itemize
-
-@node News-3.23.52, News-3.23.51, News-3.23.53, News-3.23.x
+@node News-3.23.52, News-3.23.51, News-3.23.x, News-3.23.x
 @appendixsubsec Changes in release 3.23.52
 
 @itemize @bullet