Problem:

We have some old System Group and System Operation authorization kruft that is not really used in our system, but it does cause confusion.

Acceptance Criteria:

Remove Data Provider group from the database.
Remove associated Data Provider code from the codebase.

Remove Nobody group from the database.
Remove associated Nobody group code from the codebase.

Remove None and Execute operations from the database.
Remove associated None and Execute code from the codebase.

Note:
Delete SQL statement is needed for removing the Data Provider group from the database. Really, this is removing the group from the principal table and not the group table. The group will be removed via cascades.

A changeset will be needed to remove/delete the Nobody group and the None/Execute operations.