Backport fix for crypto: algif_skcipher - Remove custom release parent function

Backport fix for crypto: algif_skcipher - Remove custom release parent function

Orabug: stable_rc4

commit d7b65aee1e7b4c87922b0232eaba56a8a143a4a0 upstream.

This patch removes the custom release parent function as the
generic af_alg_release_parent now works for nokey sockets too.

Cc: stable@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
(cherry picked from commit 7327b23abeb498c103125f234c7698115db5970b)

Signed-off-by: Dan Duval <dan.duval@oracle.com>