remove redundant rank0_log function. (#9560)

Co-authored-by: linhuang <linhuang@ruijie.com.cn>

python/sglang/srt/utils.py

@@ -2002,13 +2002,6 @@ def configure_ipv6(dist_init_addr):
     return port, host
 
 
-def rank0_log(msg: str):
-    from sglang.srt.distributed import get_tensor_model_parallel_rank
-
-    if get_tensor_model_parallel_rank() == 0:
-        logger.info(msg)
-
-
 def launch_dummy_health_check_server(host, port, enable_metrics):
     import asyncio