crypto: api - Remove crypto_init_ops()

Purge crypto_type::init() as well.
The last user seems to be gone with commit d63007eb ("crypto:
ablkcipher - remove deprecated and unused ablkcipher support").

Signed-off-by: Dmitry Safonov <dima@arista.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>