Want to limit OPTIONS and TRACE method from nginx server

Referred following post( section #11)
Disable certain HTTP methods at global level, below article will help us to restrict at server block level
* http://www.cyberciti.biz/tips/linux-unix-bsd-nginx-webserver-security.html

We want to disable at global level because our configuration consist of so many server blocks

Any help appreciated


Regards
Kamalakar