crypto: echainiv - Remove unused alg/spawn variable

This patch remove two unused variable and some dead "code" using it.

Fixes: 66008d4230f6 ("crypto: echainiv - Remove AEAD compatibility code")
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/echainiv.c

@@ -118,8 +118,6 @@ static int echainiv_aead_create(struct crypto_template *tmpl,
 				struct rtattr **tb)
 {
 	struct aead_instance *inst;
-	struct crypto_aead_spawn *spawn;
-	struct aead_alg *alg;
 	int err;
 
 	inst = aead_geniv_alloc(tmpl, tb, 0, 0);
@@ -127,9 +125,6 @@ static int echainiv_aead_create(struct crypto_template *tmpl,
 	if (IS_ERR(inst))
 		return PTR_ERR(inst);
 
-	spawn = aead_instance_ctx(inst);
-	alg = crypto_spawn_aead_alg(spawn);
-
 	err = -EINVAL;
 	if (inst->alg.ivsize & (sizeof(u64) - 1) || !inst->alg.ivsize)
 		goto free_inst;