Drawing GUI Text using Javascript

 var yourGUItext : GUIText;
 
 function ShowGUIText()
 {
     yourGUItext.enabled = true;
     StopCoroutine("HideGUIText");
     StartCoroutine("HideGUIText");
 }
 
 function HideGUIText()
 {
     yield WaitForSeconds(2);
     
     yourGUItext.enabled = false;
 } 

ShowGUIText() is the function you should call to show the guitext. You can just place the content of the function in the place you currently display it. yourGUItext needed a reference to the GameObject on which you have the guitext you are displaying.

//coloque :

yourGUItext.guiText.enabled = false;

//ou (or):

Destroy(yourGUItext);