🔥 Drop the django-ckeditor recommendation (#284)

django-ckeditor is deprecated and uses CKEditor 4 which has unfixed security issues, it hasn't been a good recommendation for some time.

README.md

@@ -175,7 +175,6 @@ _For a complete listing of all available packages, see [Django Packages](https:/
 
 ### Editors
 <!--lint ignore awesome-list-item-->
-- [django-ckeditor](https://github.com/shaunsephton/django-ckeditor) - Django admin CKEditor integration.
 - [django-markdownx](https://github.com/adi-/django-markdownx) - Comprehensive Markdown plugin built for Django.
 - [django-markdown-editor](https://github.com/agusmakmun/django-markdown-editor) - Awesome Django Markdown Editor, supported for Bootstrap & Semantic-UI.
 - [django-business-logic](https://github.com/dgk/django-business-logic) - Visual DSL framework for Django.