Move SmartBulb into SmartDevice (#874)

kasa/bulb.py

@@ -5,8 +5,6 @@ from __future__ import annotations
 from abc import ABC, abstractmethod
 from typing import NamedTuple, Optional
 
-from .device import Device
-
 try:
     from pydantic.v1 import BaseModel
 except ImportError:
@@ -45,7 +43,7 @@ class BulbPreset(BaseModel):
     mode: Optional[int]  # noqa: UP007
 
 
-class Bulb(Device, ABC):
+class Bulb(ABC):
     """Base class for TP-Link Bulb."""
 
     def _raise_for_invalid_brightness(self, value):