remove unneeded type checking import

Author: joshuadavidthomas

src/django_bird/staticfiles.py

@@ -5,7 +5,6 @@
 from dataclasses import dataclass
 from enum import Enum
 from pathlib import Path
-from typing import TYPE_CHECKING
 from typing import Any
 from typing import Literal
 from typing import final
@@ -21,9 +20,6 @@
 from .apps import DjangoBirdAppConfig
 from .conf import app_settings
 
-if TYPE_CHECKING:
-    pass
-
 
 class AssetType(Enum):
     CSS = "css"