How to remove unused Kanboard features for my installation?

I am looking for a way to make Kanboard we are using more minimalistic and simple.

We don’t use time tracking, emails, subtasks, or groups. Is it possible to turn these features off? Is it possible to permanently disable/remove unused features?

PS. This is my first post here, so let me say: “What a great program. Thanks to all involved”

This is only possible with a custom plugin, which overrides/removes some features.

Will it just hide the unused components from view or is it possible to disable them to make the instance faster and less resource consuming?
Can you recommend any steps we can take?

My suggestion would just hide them.

There should be no real performance improvement if the feature is removed completely.