fix/unit: Delete non-existent can.py

Signed-off-by: lbuque <[email protected]>

Author: lbuque

m5stack/libs/unit/__init__.py

@@ -30,6 +30,5 @@
 from .rs485_iso import ISO485Unit
 from .ultrasonic_io import ULTRASONIC_IOUnit
 from .ultrasonic_i2c import ULTRASONIC_I2CUnit
-from .can import CANUnit
 from .limit import LIMITUnit
 from .op import OPUnit