fix wait bars under aspect2d

panda/src/pgui/pgWaitBar.cxx

@@ -178,9 +178,6 @@ update() {
     bar_frame[1] = bar_frame[0] + frac * (bar_frame[1] - bar_frame[0]);
     
     _bar = _bar_style.generate_into(root, bar_frame, 1);
-
-    // Make sure the bar is rendered after the frame.
-    _bar.set_bin("fixed", 1);
   }
 
   // Indicate that the bar is current for this state.