Nginx PageSpeed 123.07beta21 - NGINX_PAGESPEED

I have a question about nginx pagespeed

here are my settings in centmin.sh

NGINX_PAGESPEED=y # Install ngx_pagespeed
NGINX_PAGESPEEDGITMASTER=y # Install ngx_pagespeed from official github master instead
NGXPGSPEED_VER='1.8.31.3-beta'
NGINX_PAGESPEEDPSOL_VER='1.8.31.3'

but in the domains vhost conf, it is commented out

# ngx_pagespeed & ngx_pagespeed handler
[HASHTAG]#include[/HASHTAG] /usr/local/nginx/conf/pagespeed.conf;
[HASHTAG]#include[/HASHTAG] /usr/local/nginx/conf/pagespeedhandler.conf;
[HASHTAG]#include[/HASHTAG] /usr/local/nginx/conf/pagespeedstatslog.conf;

how come it still uses it

SERVER RESPONSE: 200 OK
Server: nginx
Content-Type: text/html; charset="UTF-8"
Transfer-Encoding: chunked
Connection: keep-alive
Vary: Accept-Encoding
Date: Thu, 29 Jan 1970 10:57:50 GMT
X-Page-Speed: 1.8.31.3-4009
Cache-Control: max-age=0, no-cache
Content-Encoding: gzip

and in the source for example

<img src="xxxxx .... pagespeed_url_hash="4064258397" onload="pagespeed.CriticalImages.checkImageForCriticality(this);"/>

---

how do I disable pagespeed?

 

tried this but it's still there.

had to set NGINX_PAGESPEED=n and then recompile nginx

but I'm still wondering why it's still enabled when it is commented out in the conf.