Hints are... well... HINTS, and thus they make a *ding*
;D
Titletext can be removed with a snap if ya simply use, say a trigger :
in the "effects" window select "TEXT", highlight the textbox and hit the SPACEBAR on yer keyboard.
This will create an empty line which will replace the current screen txt.
So just set the three "Countdown" fields in the main trigger window.
And when the trigg. fires - the old text will vanish with a snap!