Samsung Galaxy S2 — Make Lockscreen "unsave"

Hi,
I just saw, I postet on english forum, sry for that,
so heres my problem in english xD

Yesterday i flashed "official" 4.1.2 on my sgs2.
Everything works fine, except for one thing:

for my wireless lan on universitiy campus i need to install a internet certificat.
For that i needed to set up a password / pin / (this swype mwthode) for my loockscreen.
And now, i cannot remove the "save" methods ... i just wanna have the "normal" "unsave" loockscreen back ..
Is there a way to get it back?

I had the same problem with CM10 a couple of month ago.. but on CM i could solve it, by going into Profile settings, and set it so unsave mode ..
But stock rom doenst have this ...

— modified on Jan 30, 2013, 11:44:38 AM