Inline last use of OPENSSL_load_builtin_modules()

Inline last use of OPENSSL_load_builtin_modules()

This used to be a trivial wrapper of the ASN1_add_oid_module() horror.
It's no longer exported, so it can go away. It moves from the terribly
named file conf_mall.c to the equally terribly named file conf_sap.c.
I have no idea what mall and sap are supposed to mean in this context.