Remove mention of removed `gnus-treat-play-sounds' variable from manual

* info/gnus.info: Remove `gnus-treat-play-sounds' from
manual. According to lisp/gnus/ChangeLog.3 this variable was
removed in 2010 (bug#53192).

diff --git a/doc/misc/gnus.texi b/doc/misc/gnus.texi
index 479e7d948240574de5fe306e40a40f71bf987666..628815df5d08b917553489e747dfa494cb61eff0 100644 (file)
--- a/doc/misc/gnus.texi
+++ b/doc/misc/gnus.texi
@@ -12215,7 +12215,6 @@ controlling variable is a predicate list, as described above.
 @vindex gnus-treat-highlight-citation
 @vindex gnus-treat-highlight-headers
 @vindex gnus-treat-highlight-signature
-@vindex gnus-treat-play-sounds
 @vindex gnus-treat-x-pgp-sig
 @vindex gnus-treat-unfold-headers
 @vindex gnus-treat-fold-headers
@@ -12350,8 +12349,6 @@ is controlled by @code{gnus-body-boundary-delimiter}.
 
 @xref{Article Highlighting}.
 
-@vindex gnus-treat-play-sounds
-@item gnus-treat-play-sounds
 @item gnus-treat-ansi-sequences (t)
 @vindex gnus-treat-x-pgp-sig
 @item gnus-treat-x-pgp-sig (head)