[Misc] Code clean up (#1679)

Make model_runner_v1 more readable

- vLLM version: v0.9.2
- vLLM main:
vllm-project/vllm@baed180

Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>

Author: wangxiyuan

vllm_ascend/worker/eagle_proposer_v1.py

@@ -14,7 +14,7 @@
 from vllm.model_executor.models.llama_eagle3 import Eagle3LlamaForCausalLM
 from vllm.v1.sample.metadata import SamplingMetadata
 
-from vllm_ascend.attention.attention import AttentionMaskBuilder
+from vllm_ascend.attention.attention_mask import AttentionMaskBuilder
 from vllm_ascend.attention.attention_v1 import AscendAttentionState
 
 logger = init_logger(__name__)