backends/winrt/characteristic: remove unused import
This was missed in
@@ -8,7 +8,6 @@ from bleak_winrt.windows.devices.bluetooth.genericattributeprofile import (
from bleak.backends.characteristic import BleakGATTCharacteristic
from bleak.backends.descriptor import BleakGATTDescriptor
-from bleak.backends.winrt.descriptor import BleakGATTDescriptorWinRT
_GattCharacteristicsPropertiesMap = {
