crypto: gf128mul - remove incorrect comment

The comment in gf128mul_x8_ble() was copy-and-pasted from gf128mul.h and
makes no sense in the new context.  Remove it.

Cc: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/gf128mul.c

@@ -160,8 +160,6 @@ void gf128mul_x8_ble(le128 *r, const le128 *x)
 {
 	u64 a = le64_to_cpu(x->a);
 	u64 b = le64_to_cpu(x->b);
-
-	/* equivalent to gf128mul_table_be[b >> 63] (see crypto/gf128mul.c): */
 	u64 _tt = gf128mul_table_be[a >> 56];
 
 	r->a = cpu_to_le64((a << 8) | (b >> 56));