Remove no longer necessary random init.

Ref: https://pkg.go.dev/math/rand#Seed
Signed-off-by: Felix Fontein <felix@fontein.de>

Author: felixfontein

shamir/shamir.go

@@ -15,7 +15,6 @@ import (
 	"crypto/subtle"
 	"fmt"
 	mathrand "math/rand"
-	"time"
 )
 
 const (
@@ -190,7 +189,6 @@ func Split(secret []byte, parts, threshold int) ([][]byte, error) {
 	// a non-cryptographically secure source of randomness is used.
 	// As far as I know the x coordinates do not need to be random.
 
-	mathrand.Seed(time.Now().UnixNano())
 	xCoordinates := mathrand.Perm(255)
 
 	// Allocate the output array, initialize the final byte