delete before update


git-svn-id: https://plugins.svn.wordpress.org/wordpress-plugin-ajax-calendar-with-future-posts/trunk@764327 b8457f37-d9ea-0310-8a92-e5e31aec5664
v1.3

git-svn-id: https://plugins.svn.wordpress.org/wordpress-plugin-ajax-calendar-with-future-posts/trunk@764328 b8457f37-d9ea-0310-8a92-e5e31aec5664