Lint unused import (#5973)

* Lint unused import

* nit

* Remove unused imports

* revert fix_torch import

* nit

comfy/ldm/lightricks/vae/causal_video_autoencoder.py

@@ -3,7 +3,7 @@ from torch import nn
 from functools import partial
 import math
 from einops import rearrange
-from typing import Any, Mapping, Optional, Tuple, Union, List
+from typing import Optional, Tuple, Union
 from .conv_nd_factory import make_conv_nd, make_linear_nd
 from .pixel_norm import PixelNorm