post https://{hostname}/entityType.deleteAccessSchema
Deletes the specified access schema for a client. Access schemas define the subset of attributes that a client has read or write access to. Deleting an access schema gives a client read or write access to all attributes again. Note that access schemas only apply to API-based implementations of the Identity Cloud. If you are using a JavaScript SDK-based implementation of Identity Cloud then access to forms and fields is managed by the flow rather than by an access schema.
Important. More technically, deleting an access schema means that the API client regains access to the default attributes in an entity type. That might, or might not, be all the attributes in an entity type.