fix msterDisk bug

app/UI/Disk/Buttons/DeleteButton.php

@@ -30,9 +30,6 @@ class DeleteButton extends ButtonDataTableModalAction implements ClientArea
     {
         $this->initIds('deleteDiskButton');
         $this->setDisableByColumnValue("master", true);
-        // thurdata patch: prevent root disk from being deleted
-        $this->setDisableByColumnValue("root", true);
-        // thurdata end
         $this->switchToRemoveBtn();
         $this->initLoadModalAction(new DeleteModal());
     }

app/UI/Disk/Pages/DiskDataTable.php

@@ -139,10 +139,7 @@ class DiskDataTable extends DataTable implements ClientArea
                 "backup" => $entity->getBackup(),
                 "size"   => $entity->getSize(),
                 "bytes"  => $entity->getBytes(),
-                "master" => $entity->isMaster(),
-                // thurdata patch: prevent root disk from being deleted
-                "root"   => $rootDisk,
-                // thurdata end 
+                "master" => $rootDisk,
             ];
         }
         $dataProv = new ArrayDataProvider();