Removing old ACF

git-svn-id: https://plugins.svn.wordpress.org/wpbizplugins-custom-admin-help-boxes/trunk@967813 b8457f37-d9ea-0310-8a92-e5e31aec5664
New ACF version.

git-svn-id: https://plugins.svn.wordpress.org/wpbizplugins-custom-admin-help-boxes/trunk@967816 b8457f37-d9ea-0310-8a92-e5e31aec5664