xfce-base : moved unused files to obsolete dir

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>

diff --git a/recipes/xfce-base/xfce4-settings-4.6.1/xfce4-settings-4.6.1-workspaces.c.patch b/recipes/obsolete/xfce-base/xfce4-settings-4.6.1/xfce4-settings-4.6.1-workspaces.c.patch
similarity index 100%
rename from recipes/xfce-base/xfce4-settings-4.6.1/xfce4-settings-4.6.1-workspaces.c.patch
rename to recipes/obsolete/xfce-base/xfce4-settings-4.6.1/xfce4-settings-4.6.1-workspaces.c.patch