crypto: skcipher - Remove SKCIPHER_REQUEST_ON_STACK()

Now that all the users of the VLA-generating SKCIPHER_REQUEST_ON_STACK()
macro have been moved to SYNC_SKCIPHER_REQUEST_ON_STACK(), we can remove
the former.

Change-Id: I28988ad863bfcc215b329c5410e6a6bf9ab7442e
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Git-Repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Git-Commit: a9cbfe4c784436368790f0c59674f99ba97ae21e
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
diff --git a/include/crypto/skcipher.h b/include/crypto/skcipher.h
index d00ce90..45ae894 100644
--- a/include/crypto/skcipher.h
+++ b/include/crypto/skcipher.h
@@ -156,11 +156,6 @@
 			    ] CRYPTO_MINALIGN_ATTR; \
 	struct skcipher_request *name = (void *)__##name##_desc
 
-#define SKCIPHER_REQUEST_ON_STACK(name, tfm) \
-	char __##name##_desc[sizeof(struct skcipher_request) + \
-		crypto_skcipher_reqsize(tfm)] CRYPTO_MINALIGN_ATTR; \
-	struct skcipher_request *name = (void *)__##name##_desc
-
 /**
  * DOC: Symmetric Key Cipher API
  *