Looking for a addon to take of the little square when u put u mouse on some player

[zagtxx]

it is the little square that when u put the mouse on a player it appears down right side and u got name ,lvl and guild of the person or if it;s on raid just the name of the add , + lvl (elite or not)
i would like to now what is the addon that can move it or just take it off for making my uI