Remove vegetarian dinner option

Change-Id: If2e9fc798165651601fda505e6f4c77278108a7e
diff --git a/templates/register.htm b/templates/register.htm
index 5820d00..fd52252 100644
--- a/templates/register.htm
+++ b/templates/register.htm
@@ -531,10 +531,12 @@
                 <li>Panna cotta with mango</li></ul>"><span>conference dinner</span></a> on 20 July at 7pm at the <a target="iclc10-rheinterrassen" href="https://www.rheinterrassen.info/">Rheinterrassen</a> for <strong>€&#160;<span id="conference_dinner_price"><?php echo $CONFERENCE_DINNER; ?></span></strong>.
             </label>
         </div>
+        <!--
         <div class="form-group form-check pl-3" style="padding-left: 3.5em">
             <input type="checkbox" class="form-check-input" name="vegetarian_dinner" id="vegetarian_dinner" disabled <?php echo isset($_POST[ 'vegetarian_dinner']) ? 'checked' : '' ?> oninput="update_total_due()" value="vegetarian_dinner">
             <label class="form-check-label fs-4" for="vegetarian_dinner">I choose the vegetarian dinner option</label>
         </div>
+        -->
         <div id="dinnerHelp" class="form-text">
             Due to the limited number of places, it is unfortunately not possible to bring additional persons to the dinner.
         </div>