drop ascend scheduler (#4498)

Ascend scheduler was added for non chunk prefill case before, since that
the npu ops didn't work well with chunked prefill.

Now the ops with chunked prefill work better, it's time to remove the
ascend scheduler to use vLLM default scheduler.

- vLLM version: v0.11.2

---------

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

tests/e2e/310p/test_offline_inference_parallel_310p.py

@@ -24,15 +24,12 @@ from tests.e2e.conftest import VllmRunner
 MODELS = [
     "IntervitensInc/pangu-pro-moe-model",
 ]
-# set additional config for ascend scheduler and torchair graph
+# set additional config for torchair graph
 ADDITIONAL_CONFIG = [{
     "additional_config": {
         "torchair_graph_config": {
             "enabled": True
         },
-        "ascend_scheduler_config": {
-            "enabled": True,
-        }
     }
 }]