[v6.x backport] crypto: remove BIO_set_shutdown

I've not been able to find any reason for calling BIO_set_shutdown(bio, 1). This is done by default for the following versions of OpenSSL:

https://github.com/openssl/openssl/blob/OpenSSL_1_1_0/crypto/bio/bio_lib.c#L26 https://github.com/openssl/openssl/blob/OpenSSL_1_0_1/crypto/bio/bio_lib.c#L90 https://github.com/openssl/openssl/blob/OpenSSL_1_0_2/crypto/bio/bio_lib.c#L88 https://github.com/openssl/openssl/blob/OpenSSL_1_0_0/crypto/bio/bio_lib.c#L90

This commit removes the call and the comment.

PR-URL: https://github.com/nodejs/node/pull/17542 Reviewed-By: Ben Noordhuis info@bnoordhuis.nl Reviewed-By: Colin Ihrig cjihrig@gmail.com

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines

Affected core subsystem(s)

src