Problem/Motivation
There's a discussion at #3427095: [Meta] Deprecate text_with_summary about actions to remove autocreation of text_summary fields. This has come up again looking at Starshot.
In this ticket we prevent the creation of the body field, which is automatic even if you use the minimal profile.
Steps to reproduce
Proposed resolution
* Prevent creating the body field storage automatically for content types and block types.
* Fix tests