[4.0] Alert autodismiss not working

[C-Lodder]

Steps to reproduce the issue

Add the following JS snippet somewhere:

Joomla.renderMessages({'error': ['Test message']}, '#system-message-container', true, 3000);

Expected result

This should render an error alert and auto dismiss it after 3 seconds

Actual result

The alerts isn't dismissed

@dgrammatiko I suppose the CE vendor package needs updating cause there's no reference to autodismiss in the alert.js

[dgrammatiko]

Autodismiss will be removed as requested from the a11y team

[C-Lodder]

Just in core, or will the whole removeMessages function be removed?

[dgrammatiko]

also from the core.js