Remove powerwall attributes no longer present in latest firmware (#36667)

homeassistant/components/powerwall/binary_sensor.py

@@ -11,9 +11,6 @@ from homeassistant.components.binary_sensor import (
 from homeassistant.const import DEVICE_CLASS_POWER
 
 from .const import (
-    ATTR_GRID_CODE,
-    ATTR_NOMINAL_SYSTEM_POWER,
-    ATTR_REGION,
     DOMAIN,
     POWERWALL_API_DEVICE_TYPE,
     POWERWALL_API_GRID_STATUS,
@@ -79,15 +76,6 @@ class PowerWallRunningSensor(PowerWallEntity, BinarySensorEntity):
         """Get the powerwall running state."""
         return self._coordinator.data[POWERWALL_API_SITEMASTER].running
 
-    @property
-    def device_state_attributes(self):
-        """Return the device specific state attributes."""
-        return {
-            ATTR_REGION: self._site_info.region,
-            ATTR_GRID_CODE: self._site_info.grid_code,
-            ATTR_NOMINAL_SYSTEM_POWER: self._site_info.nominal_system_power_kW,
-        }
-
 
 class PowerWallConnectedSensor(PowerWallEntity, BinarySensorEntity):
     """Representation of an Powerwall connected sensor."""