remove max_size usage from switch_round example

Author: FoamyGuy

examples/displayio_layout_pygame_display_switch_round.py

@@ -17,7 +17,7 @@
 display = PyGameDisplay(width=320, height=240)
 
 # Make the display context
-main_group = displayio.Group(max_size=10)
+main_group = displayio.Group()
 display.show(main_group)
 
 switch_x = 30