Removed the com_content, com_section, com_categories. If you have existing aricles you can migrate them into
html and use it within the com_html. Read https://github.com/anahitasocial/article-exporter/blob/master/README.md
Removed  back-end components: com_checking,com_admin and unused libraires (SimplePIE, DOMit).
If you are using these libriares in your apps then use the composer to install them
* Removed  back-end components: com_checking,com_admin and unused libraires (SimplePIE, DOMit). Editors 
plugins, search and content plugins