[eog] help: Remove unhelpful plugin-send-by-mail screenshot

[Andre Klapper <aklapper src gnome org>]

commit d756a86a29fc9526f7ca455582d1b8b9b51ee04a
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Mar 3 12:15:50 2019 +0100

    help: Remove unhelpful plugin-send-by-mail screenshot
    
    It only shows an expanded menu with that entry. That's neither helpful nor
    special but requires updating the image every time a menu entry is changed.

 help/C/figures/plugin-send-by-mail.png | Bin 159940 -> 0 bytes
 help/C/plugin-send-by-mail.page        |   2 --
 help/meson.build                       |   1 -
 3 files changed, 3 deletions(-)
---
diff --git a/help/C/plugin-send-by-mail.page b/help/C/plugin-send-by-mail.page
index b9691c1b..71d84864 100644
--- a/help/C/plugin-send-by-mail.page
+++ b/help/C/plugin-send-by-mail.page
@@ -35,6 +35,4 @@ xref="plugins">eog-plugins</link>.</p>
  for this to work.</p>
 </note>
 
-<media type="image" src="figures/plugin-send-by-mail.png" style="floatend"/>
-
 </page>
diff --git a/help/meson.build b/help/meson.build
index 6f93ca53..3416f020 100644
--- a/help/meson.build
+++ b/help/meson.build
@@ -42,7 +42,6 @@ media = [
   'figures/org.gnome.eog.svg',
   'figures/org.gnome.eog-symbolic.svg',
   'figures/plugins-all.png',
-  'figures/plugin-send-by-mail.png',
   'figures/prefs-plugins-date.png',
   'figures/prefs-plugins-fullscreen.png',
   'figures/prefs-plugins.png',