[Runtime] Don't override CUDA_MODULE_LOADING (#35711)

Co-authored-by: TRAE CLI <traecli@bytedance.com>

python/sglang/srt/entrypoints/engine.py

@@ -1672,7 +1672,6 @@ def _set_envs_and_config(server_args: ServerArgs):
         if server_args.dcp_size > 1:
             os.environ["NCCL_GRAPH_MIXING_SUPPORT"] = "0"
     os.environ["CUDA_DEVICE_MAX_CONNECTIONS"] = "8"
-    os.environ["CUDA_MODULE_LOADING"] = "AUTO"
 
     if os.environ.get("TRTLLM_ENABLE_PDL", "1") != "0":
         # flashinfer uses this environment variable for various kernels from MoE to quant kernels