Cinnamon: drop rhythmbox for exaile and drop obsolete background extras

components/desktops/cinnamon.xml

@@ -8,7 +8,6 @@
 		<!-- install env-group to resolve RhBug:1891500 -->
 		<namedCollection name="cinnamon-desktop-environment"/>
 		<namedCollection name="libreoffice"/>
-		<package name="rhythmbox"/>
-		<package name="f39-backgrounds-extras-gnome"/> <!-- extra backgrounds -->
+		<package name="exaile"/>
 	</packages>
 </image>