graph : remove redundant scale_w parameter (#20235)

src/models/openai-moe-iswa.cpp

@@ -95,7 +95,7 @@ llm_build_openai_moe_iswa::llm_build_openai_moe_iswa(const llama_model & model,
                 nullptr,
                 n_expert, n_expert_used,
                 LLM_FFN_SWIGLU_OAI_MOE, false,
-                false, 0.0,
+                hparams.expert_weights_scale,
                 LLAMA_EXPERT_GATING_FUNC_TYPE_SOFTMAX_WEIGHT,
                 il);
         cb(cur, "ffn_moe_out", il);