Update cms_pwri.c

Update cms_pwri.c

CLA: trivial

When entering the branch (pbe_nid <= 0), line 66 assigns new values ​​to the variable of line 67 (pbe_nid = NID_id_pbkdf2).
However, it is not used anywhere in the future.
For this reason, lines 66 and 67 were removed.

Reviewed-by: Saša Nedvědický <sashan@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/27296)