libobs: Remove unused code

I forgot to remove this when removing the only functions that used it.

Amends 163493d1e1c75facec65ed930e20c0bb36c7db60.
Amends d283181c837a020913c58db8b4c509fa391974dd.

libobs/obs-scene.c

@@ -2082,24 +2082,6 @@ obs_sceneitem_t *obs_scene_find_source_recursive(obs_scene_t *scene, const char
 	return item;
 }
 
-struct sceneitem_check {
-	obs_source_t *source_in;
-	obs_sceneitem_t *item_out;
-};
-
-bool check_sceneitem_exists(obs_scene_t *scene, obs_sceneitem_t *item, void *vp_check)
-{
-	UNUSED_PARAMETER(scene);
-	struct sceneitem_check *check = (struct sceneitem_check *)vp_check;
-	if (obs_sceneitem_get_source(item) == check->source_in) {
-		check->item_out = item;
-		obs_sceneitem_addref(item);
-		return false;
-	}
-
-	return true;
-}
-
 obs_sceneitem_t *obs_scene_find_sceneitem_by_id(obs_scene_t *scene, int64_t id)
 {
 	struct obs_scene_item *item;

libobs/obs-view.c

@@ -140,16 +140,6 @@ void obs_view_render(obs_view_t *view)
 	pthread_mutex_unlock(&view->channels_mutex);
 }
 
-static inline size_t find_mix_for_view(obs_view_t *view)
-{
-	for (size_t i = 0, num = obs->video.mixes.num; i < num; i++) {
-		if (obs->video.mixes.array[i]->view == view)
-			return i;
-	}
-
-	return DARRAY_INVALID;
-}
-
 video_t *obs_view_add(obs_view_t *view)
 {
 	if (!obs->data.main_canvas->mix)