Remove remaining dead timing variables and imports

gns3server/api/routes/controller/dependencies/authentication.py

@@ -43,8 +43,6 @@ async def get_user_from_token(
         token: Optional[str] = Query(None, include_in_schema=False)
 ) -> schemas.User:
 
-    import time
-    _t0 = time.time()
 
     if bearer_token:
         # bearer token is used first, then any token passed as a URL parameter

gns3server/api/routes/controller/dependencies/database.py

@@ -28,8 +28,6 @@ log = logging.getLogger(__name__)
 
 async def get_db_session(request: HTTPConnection) -> AsyncSession:
 
-    import time
-    _t0 = time.time()
     async with AsyncSession(request.app.state._db_engine, expire_on_commit=False) as session:
         try:
             yield session