Revert "Make nnimap support IMAP namespaces"

This reverts commit 7b5b3ddb2dfa98d640aff7b5b160f777e22cc794.

Insufficiently tested before committing -- bugs out several places
when not using namespaces.

1 files changed, 0 insertions, 6 deletions

diff --git a/doc/misc/gnus.texi b/doc/misc/gnus.texi
index cd97cff2a05..6793ed2e9f1 100644
--- a/doc/misc/gnus.texi
+++ b/doc/misc/gnus.texi
@@ -14320,12 +14320,6 @@ fetch all textual parts, while leaving the rest on the server.
 If non-@code{nil}, record all @acronym{IMAP} commands in the
 @samp{"*imap log*"} buffer.
 
-@item nnimap-use-namespaces
-If non-@code{nil}, omit the IMAP namespace prefix in nnimap group
-names. If your IMAP mailboxes are called something like @samp{INBOX}
-and @samp{INBOX.Lists.emacs}, but you'd like the nnimap group names to
-be @samp{INBOX} and @samp{Lists.emacs}, you should enable this option.
-
 @end table