solve cuda backend dependency issue

Author: Gasoonjia

backends/cuda/cuda_partitioner.py

@@ -9,7 +9,7 @@
 from typing import Callable, Dict, final, List, Optional, Tuple
 
 import torch
-from executorch.backends.aoti.cuda.cuda_backend import CudaBackend  # usort: skip
+from executorch.backends.cuda.cuda_backend import CudaBackend  # usort: skip
 from executorch.exir.backend.compile_spec_schema import CompileSpec
 from executorch.exir.backend.partitioner import (
     DelegationSpec,

export_aoti.py

@@ -23,7 +23,7 @@
 from typing import Any, Dict, Tuple
 
 import torch
-from executorch.backends.aoti.cuda.cuda_partitioner import CudaPartitioner
+from executorch.backends.cuda.cuda_partitioner import CudaPartitioner
 
 # from executorch.backends.xnnpack.partition.xnnpack_partitioner import XnnpackPartitioner
 from executorch.exir import to_edge, to_edge_transform_and_lower