Use SCAN_INTERVAL instead of Throttle for google travel time (#31420)

The documentation for google_travel_time was at odds with the
implementation. The documentation stated a default scan time of
5 minutes, but the implementation was using Throttle which resulted
in the sensor updating at a maximum rate of one API call every
5 minutes. This was especially at odds with a given example at
the end of the documentation, which showed updating the sensor
every 2 minutes during commute times.

This change brings the implementation in line with the docs by
adopting the `SCAN_INTERVAL` constant set to the stated default
of 5 minutes and removing the Throttle.

homeassistant/components/google_travel_time/sensor.py

@@ -19,7 +19,6 @@ from homeassistant.const import (
 from homeassistant.helpers import location
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import Entity
-from homeassistant.util import Throttle
 import homeassistant.util.dt as dt_util
 
 _LOGGER = logging.getLogger(__name__)
@@ -33,7 +32,7 @@ CONF_TRAVEL_MODE = "travel_mode"
 
 DEFAULT_NAME = "Google Travel Time"
 
-MIN_TIME_BETWEEN_UPDATES = timedelta(minutes=5)
+SCAN_INTERVAL = timedelta(minutes=5)
 
 ALL_LANGUAGES = [
     "ar",
@@ -256,7 +255,6 @@ class GoogleTravelTimeSensor(Entity):
         """Return the unit this state is expressed in."""
         return self._unit_of_measurement
 
-    @Throttle(MIN_TIME_BETWEEN_UPDATES)
     def update(self):
         """Get the latest data from Google."""
         options_copy = self._options.copy()