[gnome-video-effects] Remove Daniel as maintainer (per private email)

[Andre Klapper <aklapper src gnome org>]

commit 77a4b7d2ab97a8aae9ffe73e3792875af05e6188
Author: Andre Klapper <a9016009 gmx de>
Date:   Fri Jun 11 11:01:21 2021 +0200

    Remove Daniel as maintainer (per private email)

 gnome-video-effects.doap | 7 -------
 1 file changed, 7 deletions(-)
---
diff --git a/gnome-video-effects.doap b/gnome-video-effects.doap
index 5d46e11..7def16f 100644
--- a/gnome-video-effects.doap
+++ b/gnome-video-effects.doap
@@ -13,13 +13,6 @@
   <bug-database rdf:resource="https://gitlab.gnome.org/GNOME/gnome-video-effects/issues/"; />
   <category rdf:resource="http://api.gnome.org/doap-extensions#core"; />
 
-  <maintainer>
-    <foaf:Person>
-      <foaf:name>daniel g. siegel</foaf:name>
-      <foaf:mbox rdf:resource="mailto:dgsiegel gnome org" />
-      <gnome:userid>dgsiegel</gnome:userid>
-    </foaf:Person>
-  </maintainer>
   <maintainer>
     <foaf:Person>
       <foaf:name>David King</foaf:name>