crypto: skcipher - Remove obsolete skcipher_alg helpers

As skcipher spawn users can no longer assume the spawn is of type
struct skcipher_alg, these helpers are no longer used.  Remove them.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

include/crypto/internal/skcipher.h

@@ -148,12 +148,6 @@ static inline void crypto_drop_lskcipher(struct crypto_lskcipher_spawn *spawn)
 	crypto_drop_spawn(&spawn->base);
 }
 
-static inline struct skcipher_alg *crypto_skcipher_spawn_alg(
-	struct crypto_skcipher_spawn *spawn)
-{
-	return container_of(spawn->base.alg, struct skcipher_alg, base);
-}
-
 static inline struct lskcipher_alg *crypto_lskcipher_spawn_alg(
 	struct crypto_lskcipher_spawn *spawn)
 {
@@ -166,12 +160,6 @@ static inline struct skcipher_alg_common *crypto_spawn_skcipher_alg_common(
 	return container_of(spawn->base.alg, struct skcipher_alg_common, base);
 }
 
-static inline struct skcipher_alg *crypto_spawn_skcipher_alg(
-	struct crypto_skcipher_spawn *spawn)
-{
-	return crypto_skcipher_spawn_alg(spawn);
-}
-
 static inline struct lskcipher_alg *crypto_spawn_lskcipher_alg(
 	struct crypto_lskcipher_spawn *spawn)
 {
@@ -269,36 +257,6 @@ static inline u32 skcipher_request_flags(struct skcipher_request *req)
 	return req->base.flags;
 }
 
-static inline unsigned int crypto_skcipher_alg_min_keysize(
-	struct skcipher_alg *alg)
-{
-	return alg->min_keysize;
-}
-
-static inline unsigned int crypto_skcipher_alg_max_keysize(
-	struct skcipher_alg *alg)
-{
-	return alg->max_keysize;
-}
-
-static inline unsigned int crypto_skcipher_alg_walksize(
-	struct skcipher_alg *alg)
-{
-	return alg->walksize;
-}
-
-static inline unsigned int crypto_lskcipher_alg_min_keysize(
-	struct lskcipher_alg *alg)
-{
-	return alg->co.min_keysize;
-}
-
-static inline unsigned int crypto_lskcipher_alg_max_keysize(
-	struct lskcipher_alg *alg)
-{
-	return alg->co.max_keysize;
-}
-
 /* Helpers for simple block cipher modes of operation */
 struct skcipher_ctx_simple {
 	struct crypto_cipher *cipher;	/* underlying block cipher */

include/crypto/skcipher.h

@@ -395,17 +395,6 @@ static inline struct lskcipher_alg *crypto_lskcipher_alg(
 			    struct lskcipher_alg, co.base);
 }
 
-static inline unsigned int crypto_skcipher_alg_ivsize(struct skcipher_alg *alg)
-{
-	return alg->ivsize;
-}
-
-static inline unsigned int crypto_lskcipher_alg_ivsize(
-	struct lskcipher_alg *alg)
-{
-	return alg->co.ivsize;
-}
-
 /**
  * crypto_skcipher_ivsize() - obtain IV size
  * @tfm: cipher handle
@@ -473,18 +462,6 @@ static inline unsigned int crypto_lskcipher_blocksize(
 	return crypto_tfm_alg_blocksize(crypto_lskcipher_tfm(tfm));
 }
 
-static inline unsigned int crypto_skcipher_alg_chunksize(
-	struct skcipher_alg *alg)
-{
-	return alg->chunksize;
-}
-
-static inline unsigned int crypto_lskcipher_alg_chunksize(
-	struct lskcipher_alg *alg)
-{
-	return alg->co.chunksize;
-}
-
 /**
  * crypto_skcipher_chunksize() - obtain chunk size
  * @tfm: cipher handle
@@ -516,7 +493,7 @@ static inline unsigned int crypto_skcipher_chunksize(
 static inline unsigned int crypto_lskcipher_chunksize(
 	struct crypto_lskcipher *tfm)
 {
-	return crypto_lskcipher_alg_chunksize(crypto_lskcipher_alg(tfm));
+	return crypto_lskcipher_alg(tfm)->co.chunksize;
 }
 
 static inline unsigned int crypto_sync_skcipher_blocksize(