services: network-manager: Deprecate 'iwd?' field.

* gnu/services/networking.scm (warn-iwd?-field-deprecation): New procedure,
helper for deprecated field.
(<network-manager-configuration>)[iwd?]: Use helper to warn deprecated field.
(network-manager-shepherd-service): Make iwd? a local variable independent
from the deprecated field.
* doc/guix.texi (Networking Setup): Remove mention of iwd? field.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

1 files changed, 0 insertions, 4 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index ed518cbcb8d..ccaca0a71bc 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -19890,10 +19890,6 @@ This is the list of available plugins for virtual private networks
 (VPNs).  An example of this is the @code{network-manager-openvpn}
 package, which allows NetworkManager to manage VPNs @i{via} OpenVPN.
 
-@item @code{iwd?} (default: @code{#f})
-NetworkManager will use iwd as a backend for wireless networking if this
-option is set to @code{#t}, otherwise it will use wpa-supplicant.
-
 @end table
 @end deftp