revert unwanted (?) changes

mods/sample-nginx.config

@@ -129,8 +129,9 @@ server {
     # With php5-fpm:
     fastcgi_pass unix:/var/run/php5-fpm.sock;
 
-    include fastcgi.conf;
+    include fastcgi_params;
     fastcgi_index index.php;
+    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
   }
 
   # deny access to all dot files