simplify boot order

app/UI/VmUpdate/Sections/Qemu/GeneralSection.php

@@ -172,13 +172,5 @@ class GeneralSection extends BaseSection
         $field = new Select("bootOrder0");
         $field->notEmpty();
         $this->addField($field);
-        //boot device 2
-        $field = new Select("bootOrder1");
-        $field->notEmpty();
-        $this->addField($field);
-        //boot device 3
-        $field = new Select("bootOrder2");
-        $field->notEmpty();
-        $this->addField($field);
     }
 }