修复conveyor_api导入问题

Author: wangWking

pymycobot/__init__.py

@@ -38,7 +38,7 @@
 from pymycobot.pro400 import Pro400
 from pymycobot.pro400client import Pro400Client
 from pymycobot.myarmm_control import MyArmMControl
-from conveyor_api import ConveyorAPI
+from pymycobot.conveyor_api import ConveyorAPI
 __all__ = [
     "MyPalletizer260",
     "MechArm270",

pymycobot/conveyor_api.py

@@ -3,7 +3,6 @@
 import time
 
 from serial import Serial
-from common import *
 import struct