comment out sometimes-unused import

Author: dhalbert

CPB_Keybutton_BLE/code.py

@@ -9,7 +9,9 @@
 """
 import time
 import board
-from digitalio import DigitalInOut, Direction, Pull
+from digitalio import DigitalInOut, Direction
+# Uncomment if setting .pull below.
+# from digitalio import Pull
 
 import adafruit_ble
 from adafruit_ble.advertising import Advertisement
@@ -32,7 +34,8 @@
 button_4.direction = Direction.INPUT
 button_5.direction = Direction.INPUT
 
-# NOTE: If you are not using buttons with built-in pullups, uncomment the five lines below.
+# NOTE: If you are not using buttons with built-in pullups, uncomment the five lines below,
+# and the `from digitalio import Pull` above.
 # button_1.pull = Pull.UP
 # button_2.pull = Pull.UP
 # button_3.pull = Pull.UP