[gnome-user-docs] gnome-help: Do Not Disturb already covered by linked shell-notifications page

[Andre Klapper <aklapper src gnome org>]

commit 464f97e851e9df6ecbf2802caf4b4bb1db8e12d4
Author: Andre Klapper <a9016009 gmx de>
Date:   Sat Aug 27 20:21:44 2022 +0200

    gnome-help: Do Not Disturb already covered by linked shell-notifications page

 gnome-help/C/shell-introduction.page | 8 --------
 1 file changed, 8 deletions(-)
---
diff --git a/gnome-help/C/shell-introduction.page b/gnome-help/C/shell-introduction.page
index 11577b48..423bd877 100644
--- a/gnome-help/C/shell-introduction.page
+++ b/gnome-help/C/shell-introduction.page
@@ -176,14 +176,6 @@ like "Application windows" by using if:when and if:else ? -->
   time settings and open your full calendar application directly from
   the menu.</p>
 
-<!-- TODO: Update for 3.36 UI option "Do Not Disturb" in calendar dropdown:
-
-<p>If you set yourself to Unavailable, you won’t be bothered by message popups
-at the bottom of your screen. Messages will still be available in the message
-tray when you move your mouse to the bottom-right corner. But only urgent
-messages will be presented, such as when your battery is critically low.</p>
--->
-
   <list style="compact">
     <item>
       <p><link xref="clock-calendar">Learn more about the calendar and