removed busio import

Not sure if this is the right thing to do if the import is part of the optional commented out section.  Guess someone will cross that bridge when they get there?

Author: DJDevon3

examples/ssd1306_simpletest.py

@@ -5,7 +5,6 @@
 # This example and library is meant to work with Adafruit CircuitPython API.
 
 import board
-import busio
 import displayio
 import adafruit_ssd1306