graph : remove redundant scale_w parameter (#20235)

src/models/granite-hybrid.cpp

@@ -1,6 +1,5 @@
 #include "models.h"
 
-
 llm_build_granite_hybrid::llm_build_granite_hybrid(const llama_model & model, const llm_graph_params & params) :
     llm_build_mamba_base(params) {
     const int64_t n_embd_head = hparams.n_embd_head_v;
@@ -160,7 +159,7 @@ ggml_tensor * llm_build_granite_hybrid::build_layer_ffn(ggml_tensor *       cur,
                 nullptr,
                 n_expert, n_expert_used,
                 LLM_FFN_SILU, true,
-                false, 0.0,
+                hparams.expert_weights_scale,
                 LLAMA_EXPERT_GATING_FUNC_TYPE_SOFTMAX,
                 il);
         cb(moe_out, "ffn_moe_out", il);