[openssl/openssl] 20a54a: Removed unused member read_iv of ossl_record_layer_st

[fwh-dc]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 20a54aa21fc34ded577daf0bc91808b68a3b3c95
      https://github.com/openssl/openssl/commit/20a54aa21fc34ded577daf0bc91808b68a3b3c95
  Author: Frederik Wedel-Heinen <frederik.wedel-heinen at dencrypt.dk>
  Date:   2023-08-29 (Tue, 29 Aug 2023)

  Changed paths:
    M ssl/record/methods/recmethod_local.h

  Log Message:
  -----------
  Removed unused member read_iv of ossl_record_layer_st

Fixes #21732

Reviewed-by: Matt Caswell <matt at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21804)