fix pylint issues

nicegui/native.py

@@ -1,7 +1,6 @@
 import inspect
 import warnings
 from dataclasses import dataclass, field
-from functools import partial
 from multiprocessing import Queue
 from typing import Any, Callable, Dict, Optional, Tuple
 

nicegui/ui.py

@@ -70,7 +70,7 @@ __all__ = [
     'textarea',
     'time',
     'timeline',
-    'timeline_item',
+    'timeline_entry',
     'toggle',
     'tooltip',
     'tree',