Don't get the mac type in TLSv1.3

We don't use this information so we shouldn't fetch it. As noted in the
comments in #8005.

Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/8020)

(cherry picked from commit ea09abc80892920ee5db4de82bed7a193b5896f0)