remove outdated active learning docs

[hansent]

Description

removes outdated active learning docs that should no longer be included anywhere

Type of change

docs update

How has this change been tested, please provide a testcase or example of how you tested the change?

locally

Any specific deployment considerations

docs update

Docs

see above

[hansent]

@yeldarby do you think this is a case of "shouldnt delete docs" where maybve we only want to unlink from nav and still serve them in case they are indexed? I checked with enterpriose team and confirmed we don't really ahve anyone using active learning in this form anymore