Deprecated stuff (#16019)

* Use async with for locks

* Fix regex in template test

* Close session correctly

* Use correct current_task method

* push camera cleanup

* Lint

* Revert current_task

* Update websocket_api.py

* Mock executor_job betteR

* Fix async_create_task mock

homeassistant/components/websocket_api.py

@@ -325,7 +325,6 @@ class ActiveConnection:
         await wsock.prepare(request)
         self.debug("Connected")
 
-        # Get a reference to current task so we can cancel our connection
         self._handle_task = asyncio.Task.current_task(loop=self.hass.loop)
 
         @callback