Removed extra header in php

that is added for thousands of requests (equality for the benchmark)

config/php.ini

@@ -372,7 +372,7 @@ zend.enable_gc = On
 ; threat in any way, but it makes it possible to determine whether you use PHP
 ; on your server or not.
 ; http://php.net/expose-php
-expose_php = On
+expose_php = Off
 
 ;;;;;;;;;;;;;;;;;;;
 ; Resource Limits ;