remove calls to refresh_soon ans wait_for_frame for CP5.0 compatibility

Author: jerryneedell

PyPortal_OpenWeather/openweather_graphics.py

@@ -138,5 +138,3 @@ def set_icon(self, filename):
                                                    pixel_shader=displayio.ColorConverter(),
                                                    position=(0,0))
         self._icon_group.append(self._icon_sprite)
-        board.DISPLAY.refresh_soon()
-        board.DISPLAY.wait_for_frame()