Remove Mikrotik HttpProxy

I have remove Mikrotik http proxy line from the error.html in webproxy.

However I notice that when I go to http://www.whatismyip.com/ it show my network IP and write :

Possible Proxy Detected: 1.1 192.168.1.1 (Mikrotik HttpProxy).

I have removed all Mikrotik word from most html files in hotspot and webbox folders.

what should I do to hide the identy of my Mikrotik router from sites like the one above?

that you cannot do.