Add scan interval to config of Environment Canada sensor (#25414)

* Make refresh period configurable

* Remove throttle, set SCAN_INTERVAL

* Move SCAN_INTERVAL to module

homeassistant/components/environment_canada/sensor.py

@@ -15,11 +15,12 @@ from homeassistant.const import (
     TEMP_CELSIUS, CONF_LATITUDE, CONF_LONGITUDE, ATTR_ATTRIBUTION,
     ATTR_LOCATION)
 from homeassistant.helpers.entity import Entity
-from homeassistant.util import Throttle
 import homeassistant.helpers.config_validation as cv
 
 _LOGGER = logging.getLogger(__name__)
 
+SCAN_INTERVAL = timedelta(minutes=10)
+
 ATTR_UPDATED = 'updated'
 ATTR_STATION = 'station'
 ATTR_DETAIL = 'alert detail'
@@ -29,8 +30,6 @@ CONF_ATTRIBUTION = "Data provided by Environment Canada"
 CONF_STATION = 'station'
 CONF_LANGUAGE = 'language'
 
-MIN_TIME_BETWEEN_UPDATES = timedelta(minutes=1)
-
 
 def validate_station(station):
     """Check that the station ID is well-formed."""
@@ -110,7 +109,6 @@ class ECSensor(Entity):
         """Return the units of measurement."""
         return self._unit
 
-    @Throttle(MIN_TIME_BETWEEN_UPDATES)
     def update(self):
         """Update current conditions."""
         self.ec_data.update()