test: remove unnecessary V8 flag
I'm trying to remove the flag upstream.
Refs: https://chromium-review.googlesource.com/c/v8/v8/+/2741582
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
I'm trying to remove the flag upstream.
Refs: https://chromium-review.googlesource.com/c/v8/v8/+/2741582