[Misc] Clean up utils (#27552)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

tests/utils_/test_serial_utils.py

@@ -14,7 +14,7 @@ from vllm.utils.serial_utils import (
 
 @pytest.mark.parametrize("endianness", ENDIANNESS)
 @pytest.mark.parametrize("embed_dtype", EMBED_DTYPE_TO_TORCH_DTYPE.keys())
-@torch.inference_mode
+@torch.inference_mode()
 def test_encode_and_decode(embed_dtype: str, endianness: str):
     for i in range(10):
         tensor = torch.rand(2, 3, 5, 7, 11, 13, device="cpu", dtype=torch.float32)