remove rounding of temperature reading (#13018)

With homeassistant 0.65.0 the filter sensor is introduced. Now there
is a common way to filter the peaks comming from the readings.

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>

homeassistant/components/sensor/lacrosse.py

@@ -157,7 +157,7 @@ def _callback_lacrosse(self, lacrosse_sensor, user_data):
             self._expiration_trigger = async_track_point_in_utc_time(
                 self.hass, self.value_is_expired, expiration_at)
 
-        self._temperature = round(lacrosse_sensor.temperature * 2) / 2
+        self._temperature = lacrosse_sensor.temperature
         self._humidity = lacrosse_sensor.humidity
         self._low_battery = lacrosse_sensor.low_battery
         self._new_battery = lacrosse_sensor.new_battery