Remove obsolete information from Gnus manual

The Gnus manual was still referencing long-removed external
marks in section "Archiving Mails".  Without external marks,
that section is almost pointless, so remove it completely.
* doc/misc/gnus.texi (Archiving Mail): Remove section.
(Top, Browsing the Web): Remove references to "Archiving
Mail".  (Bug#63497)

diff --git a/doc/misc/gnus.texi b/doc/misc/gnus.texi
index f0d3c75d055e5b440ecd1a1130d2ee6832a60aea..d77d4be1beeebb595a6b9c37b175c5f0ab1bc95c 100644 (file)
--- a/doc/misc/gnus.texi
+++ b/doc/misc/gnus.texi
@@ -713,7 +713,6 @@ Choosing a Mail Back End
 
 Browsing the Web
 
-* Archiving Mail::
 * Web Searches::                Creating groups from articles that match a string.
 * RSS::                         Reading RDF site summary.
 
@@ -17244,7 +17243,6 @@ Gnus has been getting a bit of a collection of back ends for providing
 interfaces to these sources.
 
 @menu
-* Archiving Mail::
 * Web Searches::                Creating groups from articles that match a string.
 * RSS::                         Reading RDF site summary.
 @end menu
@@ -17261,29 +17259,6 @@ cases, it makes a lot of sense to let the Gnus Agent (@pxref{Gnus
 Unplugged}) handle downloading articles, and then you can read them at
 leisure from your local disk.  No more World Wide Wait for you.
 
-@node Archiving Mail
-@subsection Archiving Mail
-@cindex archiving mail
-@cindex backup of mail
-
-Some of the back ends, notably @code{nnml}, @code{nnfolder}, and
-@code{nnmaildir}, now actually store the article marks with each group.
-For these servers, archiving and restoring a group while preserving
-marks is fairly simple.
-
-(Preserving the group level and group parameters as well still
-requires ritual dancing and sacrifices to the @file{.newsrc.eld} deity
-though.)
-
-To archive an entire @code{nnml}, @code{nnfolder}, or @code{nnmaildir}
-server, take a recursive copy of the server directory.  There is no need
-to shut down Gnus, so archiving may be invoked by @code{cron} or
-similar.  You restore the data by restoring the directory tree, and
-adding a server definition pointing to that directory in Gnus.  The
-@ref{Article Backlog}, @ref{Asynchronous Fetching} and other things
-might interfere with overwriting data, so you may want to shut down Gnus
-before you restore the data.
-
 @node Web Searches
 @subsection Web Searches
 @cindex nnweb