gui.c: Remove unneeded condition

Even if neither hcentered or vcentered are used, GUI element position
must be determined by that of its parents.

src/gui/src/gui.c

@@ -47,9 +47,7 @@ void gui_coords(const struct gui_common *const g, short *const x,
     {
         short px = p->x + p->xoff, py = p->y + p->yoff;
 
-        if (p->hcentered || p->vcentered)
-            gui_coords(p, &px, &py);
-
+        gui_coords(p, &px, &py);
         *x += px;
         *y += py;
     }