Tiny remove duplicated code (sgl-project#5021)

Author: fzyzcjy

python/sglang/srt/server_args.py

@@ -294,13 +294,6 @@ def __post_init__(self):
         if self.grammar_backend is None:
             self.grammar_backend = "xgrammar"
 
-        # Expert parallelism
-        if self.enable_ep_moe:
-            self.ep_size = self.tp_size
-            logger.info(
-                f"EP MoE is enabled. The expert parallel size is adjusted to be the same as the tensor parallel size[{self.tp_size}]."
-            )
-
         self.enable_multimodal: Optional[bool] = self.enable_llama4_multimodal
 
         # Data parallelism attention