crypto: algif_skcipher - Remove custom release parent function

    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>