crypto: caam - remove unused sg_to_sec4_sg_len()

sg_to_sec4_sg_len() is no longer used since
commit 479bcc7c5b9e ("crypto: caam - Convert authenc to new AEAD interface")

Its functionality has been superseded by the usage of sg_nents_for_len()
returning the number of S/G entries corresponding to the provided length.

Signed-off-by: Horia Geantă <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

drivers/crypto/caam/sg_sw_sec4.h

···
 	sec4_sg_ptr = sg_to_sec4_sg(sg, sg_count, sec4_sg_ptr, offset);
 	sec4_sg_ptr->len |= cpu_to_caam32(SEC4_SG_LEN_FIN);
 }
-
-static inline struct sec4_sg_entry *sg_to_sec4_sg_len(
-	struct scatterlist *sg, unsigned int total,
-	struct sec4_sg_entry *sec4_sg_ptr)
-{
-	do {
-		unsigned int len = min(sg_dma_len(sg), total);
-
-		dma_to_sec4_sg_one(sec4_sg_ptr, sg_dma_address(sg), len, 0);
-		sec4_sg_ptr++;
-		sg = sg_next(sg);
-		total -= len;
-	} while (total);
-	return sec4_sg_ptr - 1;
-}