remove dead code

internal/lib/sieve/radical.go

@@ -16,24 +16,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 package sieve
 
-func radicalUpdateMultiples(sieve []uint, p uint, n uint) {
-	for q := p; ; q *= p {
-		// rad(a*b) = rad(a) * rad(b) if gcd(a,b) = 1
-		for i := 2 * q; i < n; i += q {
-			if i%(p*q) != 0 {
-				sieve[i] *= sieve[q]
-			}
-		}
-
-		if p*q >= n {
-			break
-		}
-
-		// rad(p^k) = rad(p)
-		sieve[p*q] = sieve[q]
-	}
-}
-
 /*
 Radical computes rad(k) for k=1 to n, where rad(n) is the radical of n.
 */