libct/configs: use slices.Delete

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

libcontainer/configs/namespaces_linux.go

@@ -3,6 +3,7 @@ package configs
 import (
 	"fmt"
 	"os"
+	"slices"
 	"sync"
 )
 
@@ -98,7 +99,7 @@ func (n *Namespaces) Remove(t NamespaceType) bool {
 	if i == -1 {
 		return false
 	}
-	*n = append((*n)[:i], (*n)[i+1:]...)
+	*n = slices.Delete((*n), i, i+1)
 	return true
 }