Revert "moe_gating_top_k" (#5512)

Reverts vllm-project/vllm-ascend#5271

It breaks e2e test

- vLLM version: v0.13.0
- vLLM main:
45c1ca1ca1

tests/ut/model_loader/netloader/test_netloader_elastic.py

@@ -311,7 +311,7 @@ def test_client_handler_mismatch(server_config):
         mismatch_data = {
             "label": "JOIN",
             "content": {
-                "device_id": 1,  # Mismatched ID
+                "device_id": 1,  # 不匹配的ID
                 "model_path": "/wrong/model",
                 "tp": 2,
                 "pp": 2,

tests/ut/worker/test_worker_v1.py

@@ -670,7 +670,7 @@ class TestNPUWorker(TestBase):
             (5000, 10000),
         ]
 
-        # Create worker mock
+        # 创建 worker mock
         with patch.object(NPUWorker, "__init__", lambda x, **kwargs: None):
             worker = NPUWorker()
             worker.init_npu_memory = 8500