No, because the decorative frame (where those buttons live) is not created or controlled by Tk, but rather, by the window manager, which is platform specific and user configuration specific.

Of course, it's not really impossible... but it would take a lot of chicanery to do it from your perl program, and you'd have to worry about handling various window manager scenarios.

Better, probably, would be to configure your desktop environment so that your window manager knows not to put those decorations on the window in question. In X, the .Xdefaults file (and related mechanisms) would be one way to do it. MS Windows may have something similar.