fix(repo): centralize repository-scoped authorization (#39063)

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

modules/repository/delete.go

@@ -1,33 +0,0 @@
-// Copyright 2022 The Gitea Authors. All rights reserved.
-// SPDX-License-Identifier: MIT
-
-package repository
-
-import (
-	"context"
-
-	"gitea.dev/models/organization"
-	repo_model "gitea.dev/models/repo"
-	user_model "gitea.dev/models/user"
-)
-
-// CanUserDelete returns true if user could delete the repository
-func CanUserDelete(ctx context.Context, repo *repo_model.Repository, user *user_model.User) (bool, error) {
-	if user.IsAdmin || user.ID == repo.OwnerID {
-		return true, nil
-	}
-
-	if err := repo.LoadOwner(ctx); err != nil {
-		return false, err
-	}
-
-	if repo.Owner.IsOrganization() {
-		isAdmin, err := organization.OrgFromUser(repo.Owner).IsOrgAdmin(ctx, user.ID)
-		if err != nil {
-			return false, err
-		}
-		return isAdmin, nil
-	}
-
-	return false, nil
-}