MAGETWO-55664: Portdown MAGETWO-51428 down to M2.0.x branch

(cherry picked from commit e100fd0)

Author: vzabaznov

nginx.conf.sample

@@ -160,8 +160,6 @@ location ~ (index|get|static|report|404|503)\.php$ {
     fastcgi_pass   fastcgi_backend;
     fastcgi_buffers 1024 4k;
 
-    fastcgi_param  PHP_FLAG  "session.auto_start=off \n suhosin.session.cryptua=off";
-    fastcgi_param  PHP_VALUE "memory_limit=768M \n max_execution_time=18000";
     fastcgi_read_timeout 600s;
     fastcgi_connect_timeout 600s;