Removed deprecated GenerateSafePrimes function

The new function should be now called directly.

utils.go

@@ -4,7 +4,6 @@ import (
 	"crypto/rand"
 	"io"
 	"math/big"
-	"time"
 )
 
 var ZERO = big.NewInt(0)
@@ -21,15 +20,6 @@ func Factorial(n int) *big.Int {
 	return ret
 }
 
-//  Returns 2 primes such that p = 2 * q + 1 and that the length of
-//  p is nbits.  `p` is called a safe prime
-//
-// Deprecated: This function has been left here just for backward compatibility.
-// Please use `GenerateSafePrime` from the `safe_prime_generator.go` directly.
-func GenerateSafePrimes(nbits int, random io.Reader) (p, q *big.Int, err error) {
-	return GenerateSafePrime(nbits, 4, 120*time.Second)
-}
-
 // Generate a random element in the group of all the elements in Z/nZ that
 // has a multiplicative inverse.
 func GetRandomNumberInMultiplicativeGroup(n *big.Int, random io.Reader) (*big.Int, error) {