Silence some startup warnings.

This could maybe be improved so we wait until display config
is available before updating xsettings (this happens in shell now)
but Cinnamon is used to having csd-xsettings already running when
it starts, so keep it that way for now.

plugins/xsettings/csd-xsettings-manager.c

@@ -581,7 +581,7 @@ get_window_scale (CinnamonSettingsXSettingsManager *manager)
                                              NULL,
                                              &error);
         if (!current_state) {
-                g_warning ("Failed to get current display configuration state: %s",
+                g_debug ("Failed to get current display configuration state: %s",
                            error->message);
                 return 1;
         }
@@ -1107,7 +1107,7 @@ animations_enabled_changed (CinnamonSettingsXSettingsManager *manager)
                                                NULL,
                                                &error);
             if (!res) {
-                    g_warning ("Failed to get AnimationsEnabled state from Cinnamon: %s",
+                    g_debug ("Failed to get AnimationsEnabled state from Cinnamon: %s",
                                error->message);
             } else {
                 g_variant_get (res, "(v)", &animations_enabled_variant);