tls: remove unused ocsp extension parsing

The OCSP info from parsing the TLS ClientHello has not been used since
550c2638, remove it.

See: https://github.com/nodejs/node/pull/1464

PR-URL: https://github.com/nodejs/node/pull/25153


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>