crypto: skcipher - Get rid of crypto_spawn_skcipher2()

Since commit 3a01d0ee2b ("crypto: skcipher - Remove top-level
givcipher interface"), crypto_spawn_skcipher2() and
crypto_spawn_skcipher() are equivalent.  So switch callers of
crypto_spawn_skcipher2() to crypto_spawn_skcipher() and remove it.

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

crypto/authenc.c

@@ -324,7 +324,7 @@ static int crypto_authenc_init_tfm(struct crypto_aead *tfm)
 	if (IS_ERR(auth))
 		return PTR_ERR(auth);
 
-	enc = crypto_spawn_skcipher2(&ictx->enc);
+	enc = crypto_spawn_skcipher(&ictx->enc);
 	err = PTR_ERR(enc);
 	if (IS_ERR(enc))
 		goto err_free_ahash;