bug#6537: 23.2; doc fix for rx

[Leo]

It seems like leftover since it is already mentioned in the preceding
text.

Changes in HEAD
        Modified lisp/emacs-lisp/rx.el
diff --git a/lisp/emacs-lisp/rx.el b/lisp/emacs-lisp/rx.el
index 5d04494..85fe351 100644
--- a/lisp/emacs-lisp/rx.el
+++ b/lisp/emacs-lisp/rx.el
@@ -1053,9 +1053,6 @@ CHAR
      like `and', but makes the match accessible with `match-end',
      `match-beginning', and `match-string'.
 
-`(group SEXP1 SEXP2 ...)'
-     another name for `submatch'.
-
 `(or SEXP1 SEXP2 ...)'
 `(| SEXP1 SEXP2 ...)'
      matches anything that matches SEXP1 or SEXP2, etc.  If all


Leo