Clean deprecated DeepSeek V4 Environs (#34926)

python/sglang/srt/server_args.py

@@ -5510,7 +5510,6 @@ class ServerArgs:
                 envs.SGLANG_OPT_USE_TILELANG_INDEXER.set(True)
             elif is_hip():
                 envs.SGLANG_OPT_DEEPGEMM_HC_PRENORM.set(False)
-                envs.SGLANG_OPT_USE_FUSED_COMPRESS.set(True)
                 envs.SGLANG_OPT_FP8_WO_A_GEMM.set(False)
                 envs.SGLANG_OPT_USE_JIT_INDEXER_METADATA.set(False)
                 envs.SGLANG_OPT_USE_TOPK_V2.set(False)
@@ -6886,10 +6885,6 @@ class ServerArgs:
             self.enforce_shared_experts_fusion = True
             logger.info(f"Waterfill is enabled with moe_a2a_backend='{a2a_backend}'.")
 
-        if a2a_backend == "megamoe":
-            if not envs.SGLANG_OPT_FIX_MEGA_MOE_MEMORY.is_set():
-                envs.SGLANG_OPT_FIX_MEGA_MOE_MEMORY.set(True)
-
         if a2a_backend == "deepep":
             if self.moe_runner_backend == "flashinfer_cutedsl":
                 if self.deepep_mode == "auto":