Move imports in http component (#27474)

homeassistant/components/http/cors.py

@@ -1,4 +1,5 @@
 """Provide CORS support for the HTTP component."""
+import aiohttp_cors
 from aiohttp.web_urldispatcher import Resource, ResourceRoute, StaticResource
 from aiohttp.hdrs import ACCEPT, CONTENT_TYPE, ORIGIN, AUTHORIZATION
 
@@ -22,8 +23,6 @@ VALID_CORS_TYPES = (Resource, ResourceRoute, StaticResource)
 @callback
 def setup_cors(app, origins):
     """Set up CORS."""
-    import aiohttp_cors
-
     cors = aiohttp_cors.setup(
         app,
         defaults={