fix import lints

Author: cpsievert

shiny/express/ui/_hold.py

@@ -4,7 +4,7 @@
 from types import TracebackType
 from typing import Callable, Optional, Type, TypeVar
 
-from htmltools import wrap_displayhook_handler, TagList
+from htmltools import TagList, wrap_displayhook_handler
 
 from ..._docstring import no_example
 from ..._typing_extensions import ParamSpec

shiny/ui/_chat.py

@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import inspect
-import json
 from typing import (
     Any,
     AsyncIterable,