Remove title from MRQ individual feedback

mentoring/templates/html/tip_choice_group.html

 <div class="tip-choice-group">
   <div class="close"></div>
-  <div class="title">
-    {% if completed %}
-      Correct! That is the right choice.
-    {% else %}
-      That is not the right choice.
-    {% endif %}
-  </div>
   {% for tip_fragment in tips_fragments %}
     {{ tip_fragment.body_html|safe }}
   {% endfor %}