fix imports

Author: gkech

internal/controller/pgupgrade/world_test.go

@@ -13,7 +13,6 @@ import (
 	corev1 "k8s.io/api/core/v1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/runtime/schema"
 
 	"github.com/percona/percona-postgresql-operator/internal/controller/runtime"
 	"github.com/percona/percona-postgresql-operator/internal/initialize"