crypto: x86/poly1305 - remove cra_alignmask

crypto_poly1305_final() no longer requires a cra_alignmask, and nothing
else in the x86 poly1305-simd implementation does either.  So remove the
cra_alignmask so that the crypto API does not have to unnecessarily
align the buffers.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

arch/x86/crypto/poly1305_glue.c

@@ -171,7 +171,6 @@ static struct shash_alg alg = {
 		.cra_driver_name	= "poly1305-simd",
 		.cra_priority		= 300,
 		.cra_flags		= CRYPTO_ALG_TYPE_SHASH,
-		.cra_alignmask		= sizeof(u32) - 1,
 		.cra_blocksize		= POLY1305_BLOCK_SIZE,
 		.cra_module		= THIS_MODULE,
 	},