load cleanups (#23112)

* load cleanups

* Remove unused methods

* Allow importing requirements at the top of a file

* Fix test

* Lint

* Install reqs ASAP when loading platforms

homeassistant/components/hue/config_flow.py

@@ -3,6 +3,7 @@ import asyncio
 import json
 import os
 
+from aiohue.discovery import discover_nupnp
 import async_timeout
 import voluptuous as vol
 
@@ -57,8 +58,6 @@ class HueFlowHandler(config_entries.ConfigFlow):
 
     async def async_step_init(self, user_input=None):
         """Handle a flow start."""
-        from aiohue.discovery import discover_nupnp
-
         if user_input is not None:
             self.host = user_input['host']
             return await self.async_step_link()