remove some useless input elements

Author: bobby285271

myapp/templates/level5.html

@@ -293,7 +293,6 @@
     </div>
     <form action="{% url 'compare_flag' %}" method="post" style="display: none" id="post_form">
         {% csrf_token %}
-        <input type="text" name="flag" value="level5">
     </form>
     <script type="text/javascript" src="{% static 'myapp/js/music.js'%}"></script>
     <script type="text/javascript" src="{% static 'myapp/js/script.js'%}"></script>

myapp/templates/level6.html

@@ -240,7 +240,6 @@
 
      <form action="{% url 'compare_flag' %}" method="post" style="display: none" id="post_form">
           {% csrf_token %}
-          <input type="text" name="flag" value="level6">
       </form>
 
     <script type="text/javascript" src="{% static 'myapp/js/level66.js' %}"></script>