Rewrite rules of WPFC is removed from .htaccess when wpfc is deactivated

git-svn-id: https://plugins.svn.wordpress.org/wp-fastest-cache/trunk@805774 b8457f37-d9ea-0310-8a92-e5e31aec5664
Rewrite rules of WPFC is removed from .htaccess when wpfc is deactivated

git-svn-id: https://plugins.svn.wordpress.org/wp-fastest-cache/trunk@805775 b8457f37-d9ea-0310-8a92-e5e31aec5664