[evolution] help: Remove "New mail notification" GNOME desktop screenshot

[Andre Klapper <aklapper src gnome org>]

commit 7347a34221775ad1ff39acef419cf79607a6de74
Author: Andre Klapper <a9016009 gmx de>
Date:   Fri Feb 28 14:35:45 2020 +0100

    help: Remove "New mail notification" GNOME desktop screenshot
    
    Not helpful enough, plus maintenance costs when GNOME UI changes.

 help/C/figures/new-mail-notification.png  | Bin 39985 -> 0 bytes
 help/C/mail-received-notification.page    |   4 +---
 help/CMakeLists.txt                       |   1 -
 help/de/figures/new-mail-notification.png | Bin 59024 -> 0 bytes
 4 files changed, 1 insertion(+), 4 deletions(-)
---
diff --git a/help/C/mail-received-notification.page b/help/C/mail-received-notification.page
index 275789c004..ac30dffc9f 100644
--- a/help/C/mail-received-notification.page
+++ b/help/C/mail-received-notification.page
@@ -35,9 +35,7 @@
 <item><p>Open the <gui style="tab">Accounts</gui> tab to select the mail accounts for which you would like 
to see notifications.</p></item>
 </steps>
 
-<media type="image" src="./figures/new-mail-notification.png" width="512">
-  <p>GNOME notification area when a new message has arrived</p>
-</media>
+<p>See <link xref="help:gnome-help/shell-notifications" 
href="https://help.gnome.org/users/gnome-help/stable/shell-notifications";>the GNOME Desktop Help</link> for 
more information.</p>
 
 <!-- TODO: Quite short; plus recheck once https://bugzilla.gnome.org/show_bug.cgi?id=653699 is fixed -->
 
diff --git a/help/CMakeLists.txt b/help/CMakeLists.txt
index cc1df95be1..1ac3c1cf36 100644
--- a/help/CMakeLists.txt
+++ b/help/CMakeLists.txt
@@ -18,7 +18,6 @@ set(HELP_MEDIA
        ${HELP_FIGURES_DIR}/html-composer-insert-rule.png
        ${HELP_FIGURES_DIR}/html-composer-insert-table.png
        ${HELP_FIGURES_DIR}/minus-icon.png
-       ${HELP_FIGURES_DIR}/new-mail-notification.png
        ${HELP_FIGURES_DIR}/new-mail-switcher.png
        ${HELP_FIGURES_DIR}/plus-icon.png
        ${HELP_FIGURES_DIR}/search-icon.png