gpe-session-scripts : moved unused files to obsolete dir

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

diff --git a/recipes/gpe-session-scripts/files/angstrom-change-theme.diff b/recipes/obsolete/gpe-session-scripts/files/angstrom-change-theme.diff
similarity index 100%
rename from recipes/gpe-session-scripts/files/angstrom-change-theme.diff
rename to recipes/obsolete/gpe-session-scripts/files/angstrom-change-theme.diff