Remove reference to outdated Gnus variable from the manual

* doc/misc/gnus.texi (Startup Variables): Remove reference to
gnus-use-backend-marks, which was removed in 2011 (bug#43833).

diff --git a/doc/misc/gnus.texi b/doc/misc/gnus.texi
index ee20d28ce66c8fcc00da094ba4310866fd6d9e75..f356dfe4d05e2e698748dd2eca443387f841eebf 100644 (file)
--- a/doc/misc/gnus.texi
+++ b/doc/misc/gnus.texi
@@ -1737,12 +1737,6 @@ of doing your job.  Note that this variable is used before
 @vindex gnus-no-groups-message
 Message displayed by Gnus when no groups are available.
 
-@item gnus-use-backend-marks
-@vindex gnus-use-backend-marks
-If non-@code{nil}, Gnus will store article marks both in the
-@file{.newsrc.eld} file and in the backends.  This will slow down
-group operation some.
-
 @end table