[krb5-auth-dialog] help: Drop trayincon related images

[Guido Günther <guidog src gnome org>]

commit 2b0538ca681566c149decd2b3560f862095d5960
Author: Guido Günther <agx sigxcpu org>
Date:   Sun Feb 14 16:30:46 2021 +0100

    help: Drop trayincon related images
    
    The tray icon got removed in 8eb42cb89d145d93af1396fc4b6cdaae6730f625

 help/C/figures/trayicon-expired.png  | Bin 1258 -> 0 bytes
 help/C/figures/trayicon-expiring.png | Bin 1344 -> 0 bytes
 help/C/figures/trayicon-valid.png    | Bin 1163 -> 0 bytes
 help/meson.build                     |   3 ---
 4 files changed, 3 deletions(-)
---
diff --git a/help/meson.build b/help/meson.build
index 17faec7..940ae73 100644
--- a/help/meson.build
+++ b/help/meson.build
@@ -7,9 +7,6 @@ krb5_auth_dialog_media = [
   'figures/ka-valid.png',
   'figures/ka-expired.png',
   'figures/ka-expiring.png',
-  'figures/trayicon-valid.png',
-  'figures/trayicon-expired.png',
-  'figures/trayicon-expiring.png',
 ]
 
 gnome.yelp(