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

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

vllm/model_executor/layers/quantization/fp8.py

@@ -11,9 +11,9 @@ import vllm.envs as envs
 import vllm.model_executor.layers.fused_moe.modular_kernel as mk
 from vllm import _custom_ops as ops
 from vllm._aiter_ops import rocm_aiter_ops
-from vllm.attention.layer import Attention
 from vllm.distributed import get_tensor_model_parallel_world_size
 from vllm.logger import init_logger
+from vllm.model_executor.layers.attention import Attention
 from vllm.model_executor.layers.batch_invariant import (
     vllm_is_batch_invariant,
 )