test: remove unnecessary noop function args to `mustCall()`
Follow up to https://github.com/nodejs/node/pull/45027, which the first commit is from. Marking this PR as https://github.com/nodejs/node/labels/blocked until the other PR lands.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Follow up to https://github.com/nodejs/node/pull/45027, which the first commit is from. Marking this PR as https://github.com/nodejs/node/labels/blocked until the other PR lands.