how to remove text frame using js?

Can I remove/delete text frame in PDF using js in Acrobat?

first im creating new text frame (mouse input):

var name = "info";
var type = "text";
var page = 6;
var location = [120, 80, 220, 100];
var infoF = this.addField(name, type, page, location);
infoF.value = "kliknij, by skopiować wzór";

var t = this.getField("t15a4");
t.display = display.visible;

next i want delete this frame (it's my temporery info only) using second script (mouse exit):

var t = this.getField("infoF");
//t.display = display.hidden;

t.delete();  // or

t.remove();  // etc.

unfortunately nothing wants to work