remove dependency on touchio

Author: FoamyGuy

adafruit_debouncer.py

@@ -48,7 +48,6 @@
 import time
 import digitalio
 from micropython import const
-import touchio
 
 _DEBOUNCED_STATE = const(0x01)
 _UNSTABLE_STATE = const(0x02)
@@ -63,7 +62,7 @@ def __init__(self, io_or_predicate, interval=0.010):
            :param int interval: bounce threshold in seconds (default is 0.010, i.e. 10 milliseconds)
         """
         self.state = 0x00
-        if isinstance(io_or_predicate, (digitalio.DigitalInOut, touchio.TouchIn)):
+        if hasattr(io_or_predicate, 'value'):
             self.function = lambda: io_or_predicate.value
         else:
             self.function = io_or_predicate