Remove unnecessary helper function

Author: MaxBetzDLR

cpp/memilio/io/result_io.h

@@ -117,7 +117,7 @@ IOResult<void> save_result_with_params(const std::vector<TimeSeries<ScalarType>>
     BOOST_OUTCOME_TRY(create_directory(result_dir_run.string()));
     BOOST_OUTCOME_TRY(save_result(result, county_ids, (int)(size_t)params[0].parameters.get_num_groups(),
                                   (result_dir_run / "Result.h5").string()));
-    BOOST_OUTCOME_TRY(write_graph(create_graph_without_edges<Model, MobilityParameters<ScalarType>>(params, county_ids),
+    BOOST_OUTCOME_TRY(write_graph(Graph<Model, MobilityParameters<ScalarType>>(county_ids, params),
                                   result_dir_run.string(), IOF_OmitDistributions));
     return success();
 }
@@ -212,7 +212,7 @@ IOResult<void> save_results(const std::vector<std::vector<TimeSeries<ScalarType>
             auto ensemble_params_p95 = ensemble_params_percentile(ensemble_params, 0.95);
 
             auto make_graph = [&county_ids](auto&& params) {
-                return create_graph_without_edges<Model, MobilityParameters<ScalarType>>(params, county_ids);
+                return Graph<Model, MobilityParameters<ScalarType>>(county_ids, params);
             };
             BOOST_OUTCOME_TRY(
                 write_graph(make_graph(ensemble_params_p05), result_dir_p05.string(), IOF_OmitDistributions));

cpp/tests/test_graph.cpp

@@ -146,8 +146,8 @@ TEST(TestGraph, graph_without_edges)
     std::vector<MockModel> models = {MockModel(), MockModel()};
     std::vector<int> ids          = {1, 2};
 
-    auto g = mio::create_graph_without_edges<MockModel, MockMobility>(models, ids);
-
+    mio::Graph<MockModel, MockMobility> g(ids, models);
+    
     EXPECT_EQ(g.edges().size(), 0);
     EXPECT_EQ(g.nodes().size(), 2);
     EXPECT_EQ(g.nodes()[0].id, 1);

cpp/tests/test_save_parameters.cpp

@@ -255,7 +255,7 @@ TEST(TestSaveParameters, read_graph_without_edges)
     std::vector<mio::osecir::Model<double>> models = {model, model};
     std::vector<int> ids                           = {0, 1};
     auto graph_no_edges =
-        mio::create_graph_without_edges<mio::osecir::Model<double>, mio::MobilityParameters<double>>(models, ids);
+        mio::Graph<mio::osecir::Model<double>, mio::MobilityParameters<double>>(ids, models);
     auto write_status = mio::write_graph(graph_no_edges, tmp_results_dir);
     ASSERT_THAT(print_wrap(write_status), IsSuccess());