[Qwen-moe] Remove the minor operation arange (#2373)

### What this PR does / why we need it?
Integrate the arange operator to reduce the time spent and improve
performance

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?

- vLLM version: v0.10.1.1
- vLLM main:
56dcf4e7e9

---------

Signed-off-by: s30076806 <songjiayang2@h-partners.com>

vllm_ascend/ops/common_fused_moe.py

@@ -130,7 +130,7 @@ def forward_oot(
         logical_to_physical_map: Optional[torch.Tensor] = None,
         logical_replica_count: Optional[torch.Tensor] = None) -> torch.Tensor:
 
-    topk_weights, topk_ids = select_experts(
+    topk_weights, topk_ids, _ = select_experts(
         hidden_states=x,
         router_logits=router_logits,
         top_k=top_k,