Apply ruff/flake8-type-checking rule TCH005

TCH005 Found empty type-checking block

Author: DimitriPapadopoulos

src/zarr/core/chunk_key_encodings.py

@@ -2,7 +2,7 @@
 
 from abc import abstractmethod
 from dataclasses import dataclass
-from typing import TYPE_CHECKING, Literal, cast
+from typing import Literal, cast
 
 from zarr.abc.metadata import Metadata
 from zarr.core.common import (
@@ -11,9 +11,6 @@
     parse_named_configuration,
 )
 
-if TYPE_CHECKING:
-    pass
-
 SeparatorLiteral = Literal[".", "/"]