Remove some utilities from the core to provider interface

Remove some utilities from the core to provider interface

The core provides a number of essential functions as "upcalls" to
providers. Some of those were just utility functions that wrap other
upcalls - which don't seem essential and bloat the interface. We should
remove them in order to simplify the interface.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9432)