Unable to Remove HTTP server signature - Bigip info still displayed -

To check if it is display I use the firefox plugin - Live HHTP Header. (see With the above irule, I do not see HTTP header information

see trace: 
http://ocsp.toto.com

POST / HTTP/1.1
Host: ocsp.toto.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Length: 70
Content-Type: application/ocsp-request
Connection: keep-alive
0D0B0@0>0<0 +
HTTP/1.1 200 OK
Content-Type: application/ocsp-response
Content-Length: 1386
Date: Fri, 24 Apr 2015 13:38:27 GMT
Connection: Keep-Alive
Age: 0
----------------------------------------------------------
https://tst.test.com

GET /blabla/ HTTP/1.1
Host: tst.test.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive

HTTP/1.1 200 OK
Date: Fri, 24 Apr 2015 13:38:27 GMT
Cache-Control: private
Content-Type: text/html; charset=utf-8
Content-Length: 58494
Set-Cookie: ASP.NET_SessionId=iVFTgqZQsxY6iSRhmLZZTQ1QR5sd9Kf4TmPh1JhJkFmqPS1Vx0q+8fIUvTWeWhtzmGwckE7ivmFIGcim1/EAAAAB;secure;
Set-Cookie: TS01a40902=016657269f95f1d5f0e22028de27e17da0fc1d0b73c437d9b8205b8e5a2839fdeeac552df0c0edd399b312407b5a6104d727f9f3e4; Path=/
----------------------------------------------------------

BUT I still can see it when I execute the Qualys SSL server check -https://www.ssllabs.com/ssltest/ The result of the check is displaying HTTP server signature : BigIP I wonder where this information can be find.

Regards