Cleanup ZHAEntity class (#30131)

Remove `_domain` attribute since we're not using it anymore.

homeassistant/components/zha/binary_sensor.py

@@ -102,7 +102,6 @@ async def _async_setup_entities(
 class BinarySensor(ZhaEntity, BinarySensorDevice):
     """ZHA BinarySensor."""
 
-    _domain = DOMAIN
     _device_class = None
 
     def __init__(self, **kwargs):

homeassistant/components/zha/entity.py

@@ -30,8 +30,6 @@ RESTART_GRACE_PERIOD = 7200  # 2 hours
 class ZhaEntity(RestoreEntity, LogMixin, entity.Entity):
     """A base class for ZHA entities."""
 
-    _domain = None  # Must be overridden by subclasses
-
     def __init__(self, unique_id, zha_device, channels, skip_entity_id=False, **kwargs):
         """Init ZHA entity."""
         self._force_update = False

homeassistant/components/zha/fan.py

@@ -87,8 +87,6 @@ async def _async_setup_entities(
 class ZhaFan(ZhaEntity, FanEntity):
     """Representation of a ZHA fan."""
 
-    _domain = DOMAIN
-
     def __init__(self, unique_id, zha_device, channels, **kwargs):
         """Init this sensor."""
         super().__init__(unique_id, zha_device, channels, **kwargs)

homeassistant/components/zha/light.py

@@ -80,8 +80,6 @@ async def _async_setup_entities(
 class Light(ZhaEntity, light.Light):
     """Representation of a ZHA or ZLL light."""
 
-    _domain = light.DOMAIN
-
     def __init__(self, unique_id, zha_device, channels, **kwargs):
         """Initialize the ZHA light."""
         super().__init__(unique_id, zha_device, channels, **kwargs)

homeassistant/components/zha/lock.py

@@ -70,8 +70,6 @@ async def _async_setup_entities(
 class ZhaDoorLock(ZhaEntity, LockDevice):
     """Representation of a ZHA lock."""
 
-    _domain = DOMAIN
-
     def __init__(self, unique_id, zha_device, channels, **kwargs):
         """Init this sensor."""
         super().__init__(unique_id, zha_device, channels, **kwargs)

homeassistant/components/zha/sensor.py

@@ -109,7 +109,6 @@ class Sensor(ZhaEntity):
     _decimals = 1
     _device_class = None
     _divisor = 1
-    _domain = DOMAIN
     _multiplier = 1
     _unit = None
 

homeassistant/components/zha/switch.py

@@ -60,8 +60,6 @@ async def _async_setup_entities(
 class Switch(ZhaEntity, SwitchDevice):
     """ZHA switch."""
 
-    _domain = DOMAIN
-
     def __init__(self, **kwargs):
         """Initialize the ZHA switch."""
         super().__init__(**kwargs)