changed debugger to use correct mb instance

Author: andreamah

src/common/debugger_communication_client.py

@@ -14,8 +14,8 @@
 from adafruit_circuitplayground.express import cpx
 from adafruit_circuitplayground.constants import CPX
 
-from micropython.microbit.__model.microbit_model import __mb as mb
-from micropython.microbit.__model.constants import MICROBIT
+from microbit.__model.microbit_model import __mb as mb
+from microbit.__model.constants import MICROBIT
 
 
 device_dict = {CPX: cpx, MICROBIT: mb}