Remove include/openssl/configuration.h from mandatory dependencies

Remove include/openssl/configuration.h from mandatory dependencies

Since this file is generated by configdata.pm, there's no need to include it
among the mandatory dependencies (which end up in the `GENERATE_MANDATORY`
Makefile variable).  In fact, it shouldn't be there any more, as that would
also cause it to be removed by `make clean`.

To compensate, we add an explicit removal of that file in the `distclean`
target on all platform families.

Fixes #18396

Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18398)