Remove recommendation for DRF Docs

[AartGoossens]

Description

Since DRF Docs is not compatible with the latest version of DRF (or Django?; related issue: manosim/django-rest-framework-docs#180) and the latest release of DRF Docs is almost 3 years ago I suggest to remove the recommendation for this package.

[rpkilby]

Hi @AartGoossens. I would recommend just wholly removing drf-docs from the documentation, as it's definitely outdated (hasn't been updated in ~2 years, and doesn't support any modern versions of Django).

[AartGoossens]

Hi @rpkilby. Thanks for leaving a comment. Wholly removing it seemed a bit harsh at first but makes sense since there hasn't been any activity in the past 3 years. Will update the PR.

[rpkilby]

And of course, if the project gains a new maintainer, always happy to add it back to the list.

[AartGoossens]

Hi @rpkilby do I need to do something else to get this PR merged? Or is it just waiting for the right moment? :)

[rpkilby]

Nope, this is good to go - just slipped under the radar. GitHub's email notifications use image loading to automatically mark a notification as read. However, the iOS gmail app's push notifications will automatically loads images, erroneously marking the notification as read. ugh.

Thanks again!