Removed scoped_types.h
Removed scoped_types.h

It is no longer used (replaced with bssl:UniquePtr)

Reviewed-by: Richard Levitte <5fb523282dd7956571c80524edc2dccfa0bd8234@openssl.org>

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl