remove deprecated math/rand.Seed calls

see https://pkg.go.dev/math/rand#Seed

engine/resources.go

@@ -30,10 +30,6 @@ import (
 	"github.com/cgrates/cgrates/utils"
 )
 
-func init() {
-	rand.Seed(time.Now().UnixNano())
-}
-
 // ResourceProfile represents the user configuration for the resource
 type ResourceProfile struct {
 	Tenant             string

engine/sharedgroup.go

@@ -180,7 +180,6 @@ func (rbcs *RandomBalancesSorter) Sort() {
 	src := *rbcs
 	// randomize balance chain
 	dest := make([]*Balance, len(src))
-	rand.Seed(time.Now().UnixNano())
 	perm := rand.Perm(len(src))
 	for i, v := range perm {
 		dest[v] = src[i]