[Misc] code clean duplicate set_current_vllm_config in _set_vllm_config (vllm-project#22566)

Signed-off-by: Andy Xie <andy.xning@gmail.com>
Signed-off-by: jingyu <jingyu@omniml.ai>

Author: andyxning

tests/kernels/moe/modular_kernel_tools/parallel_utils.py

@@ -36,7 +36,6 @@ def _set_vllm_config(vllm_config: VllmConfig, world_size: int, rank: int,
     import tempfile
     temp_file = tempfile.mkstemp()[1]
 
-    set_current_vllm_config(vllm_config)
     with set_current_vllm_config(vllm_config):
         init_distributed_environment(
             world_size=world_size,