server: skip unused log lines on router mode (#24463)

tools/server/server.cpp

@@ -94,6 +94,7 @@ int llama_server(int argc, char ** argv) {
     const bool is_router_server = params.model.path.empty();
     common_params_print_info(params, !is_router_server);
 
+    if (!is_router_server) {
         // validate batch size for embeddings
         // embeddings require all tokens to be processed in a single ubatch
         // see https://github.com/ggml-org/llama.cpp/issues/12836
@@ -109,6 +110,7 @@ int llama_server(int argc, char ** argv) {
             params.n_parallel = 4;
             params.kv_unified = true;
         }
+    }
 
     // for consistency between server router mode and single-model mode, we set the same model name as alias
     if (params.model_alias.empty() && !params.model.name.empty()) {