Revert "date début event"

This reverts commit 8bd1b83c5f717befbbb915d783c79cc3247793d4.

user/themes/lecampus/templates/partials/blog/date.html.twig

@@ -1,5 +1,5 @@
   <span class="dt">
-    {% set mois_begin = 'MONTHS_OF_THE_YEAR'|ta(page.header.date|date('n') - 1) %}
+    {% set mois_begin = 'MONTHS_OF_THE_YEAR'|ta(page.header.publish_date|date('n') - 1) %}
     {% set mois_end = 'MONTHS_OF_THE_YEAR'|ta(page.header.date_end|date('n') - 1) %}
 
     {% if not page.header.date_end %}