Remove old security layer (#306)

* Remove old security layer

* remove unneded libs

* Update diagram

hassio/tasks.py

@@ -1,6 +1,5 @@
 """Multible tasks."""
 import asyncio
-from datetime import datetime
 import logging
 
 from .coresys import CoreSysAttributes
@@ -22,8 +21,6 @@ class Tasks(CoreSysAttributes):
     RUN_WATCHDOG_HOMEASSISTANT_DOCKER = 15
     RUN_WATCHDOG_HOMEASSISTANT_API = 300
 
-    RUN_CLEANUP_API_SESSIONS = 900
-
     def __init__(self, coresys):
         """Initialize Tasks."""
         self.coresys = coresys
@@ -55,13 +52,6 @@ class Tasks(CoreSysAttributes):
 
         _LOGGER.info("All core tasks are scheduled")
 
-    async def _cleanup_sessions(self):
-        """Cleanup old api sessions."""
-        now = datetime.now()
-        for session, until_valid in self._config.security_sessions.items():
-            if now >= until_valid:
-                self._config.drop_security_session(session)
-
     async def _update_addons(self):
         """Check if a update is available of a addon and update it."""
         tasks = []