Disable link in header-bar

I don't know your language but I assume that second link is Userlist. Then just add to min/Oxygen.min.css

#brd-navlinks li#navuserlist{
display:none;
}

Don't know the last one, but it works the same way.

So add at the very end of min/Oxygen.min.css

#brd-navlinks li#navtoprated, #brd-navlinks li#navuserlist{
display:none;
}

Note that if you change theme or whatever, You'll have to add this to this new one. However it's the simplest way.