Use _attr_temperature_unit in climate entities (#77472)

homeassistant/components/spider/climate.py

@@ -35,6 +35,8 @@ async def async_setup_entry(
 class SpiderThermostat(ClimateEntity):
     """Representation of a thermostat."""
 
+    _attr_temperature_unit = TEMP_CELSIUS
+
     def __init__(self, api, thermostat):
         """Initialize the thermostat."""
         self.api = api
@@ -75,11 +77,6 @@ class SpiderThermostat(ClimateEntity):
         """Return the name of the thermostat, if any."""
         return self.thermostat.name
 
-    @property
-    def temperature_unit(self):
-        """Return the unit of measurement."""
-        return TEMP_CELSIUS
-
     @property
     def current_temperature(self):
         """Return the current temperature."""