[5/N][Attention] Finish eliminating vllm/attention folder (#32064)

Signed-off-by: Matthew Bonanni <mbonanni@redhat.com>

vllm/v1/attention/backends/rocm_aiter_fa.py

@@ -8,9 +8,9 @@ from typing import ClassVar
 import torch
 
 from vllm._aiter_ops import rocm_aiter_ops
-from vllm.attention.layer import Attention
 from vllm.config import VllmConfig, get_layers_from_vllm_config
 from vllm.logger import init_logger
+from vllm.model_executor.layers.attention import Attention
 from vllm.platforms import current_platform
 from vllm.utils.math_utils import cdiv
 from vllm.utils.platform_utils import get_cu_count