fullscreen_credits: Remove `attributeOldValue` on mutation observer

Don't need the old attribute value. I had added this originally to be
able to print the values to the console for development. Now it's no
longer needed.

1 files changed, 1 insertions, 2 deletions

diff --git a/src/fullscreen_credits.ts b/src/fullscreen_credits.ts
index d8b25b9..f558221 100644
--- a/src/fullscreen_credits.ts
+++ b/src/fullscreen_credits.ts
@@ -47,8 +47,7 @@ function init_mutation_observer (player) {
 	observer.observe(
 		player,
 		{
-			attributeFilter: ['class'],
-			attributeOldValue: true
+			attributeFilter: ['class']
 		}
 	);
 }