Gift cards: Remove nested form tags

src/pretix/control/templates/pretixcontrol/giftcards/checkout.html

@@ -9,7 +9,6 @@
         <span class="sr-only">{% trans "Information" %}</span>
         {% trans "The following gift cards are available in your customer account:" %}
     </strong></p>
-    <form method="post">
     {% csrf_token %}
     <ul class="list-group">
         {% for c in customer_gift_cards %}
@@ -30,6 +29,5 @@
             </li>
         {% endfor %}
     </ul>
-    </form>
 {% endif %}
 {% bootstrap_form form layout='checkout' %}