Fix: remove checks of the exists of release when delete app and repo

Signed-off-by: LiHui <andrewli@yunify.com>

pkg/kapis/openpitrix/v1/handler.go

@@ -20,6 +20,7 @@ import (
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 	"io/ioutil"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/klog"
 	"kubesphere.io/kubesphere/pkg/api"
@@ -595,7 +596,11 @@ func (h *openpitrixHandler) GetAppVersionFiles(req *restful.Request, resp *restf
 
 	if err != nil {
 		klog.Errorln(err)
-		handleOpenpitrixError(resp, err)
+		if apierrors.IsNotFound(err) {
+			api.HandleNotFound(resp, nil, err)
+		} else {
+			api.HandleBadRequest(resp, nil, err)
+		}
 		return
 	}