Use HTTP_OK constant (#33798)

* Use http ok constant

* Remove incorrect use

* Run isort

* Fix pylint by adding missing imports

* Fix pylint by fixing one import

homeassistant/components/alexa/auth.py

@@ -7,6 +7,7 @@ import logging
 import aiohttp
 import async_timeout
 
+from homeassistant.const import HTTP_OK
 from homeassistant.core import callback
 from homeassistant.helpers import aiohttp_client
 from homeassistant.util import dt
@@ -118,7 +119,7 @@ class Auth:
         _LOGGER.debug("LWA response header: %s", response.headers)
         _LOGGER.debug("LWA response status: %s", response.status)
 
-        if response.status != 200:
+        if response.status != HTTP_OK:
             _LOGGER.error("Error calling LWA to get auth token.")
             return None