update dart guide

Author: levimichael

templates/dart/guides/search/saveObjectsMovies.mustache

@@ -11,28 +11,10 @@ void main() async {
       Uri.parse('https://dashboard.algolia.com/sample_datasets/movie.json'));
 
   if (datasetRequest.statusCode == 200) {
-    final moviesData = jsonDecode(datasetRequest.body);
-
-    final batchRequests = <BatchRequest>[];
-
-    for (final movie in moviesData) {
-      batchRequests.add(
-        BatchRequest(action: Action.fromJson('addObject'), body: movie),
-      );
-    }
+    final movies = jsonDecode(datasetRequest.body);
 
+    // push data to algolia
     {{#dynamicSnippet}}saveObjectsMovies{{/dynamicSnippet}}
-
-    try {
-      // push data to algolia
-      await client.batch(
-        indexName: 'movies_index',
-        batchWriteParams: BatchWriteParams(requests: batchRequests),
-      );
-      print("Successfully indexed records!");
-    } catch (e) {
-      print("Error: ${e.toString()}");
-    }
   } else {
     throw Exception('Failed to load data');
   }

templates/dart/tests/method.mustache

@@ -12,6 +12,7 @@ try {
   expect(res, {{#match}}{{> tests/param_value}}{{/match}});
   {{/match.isPrimitive}}
   {{/testResponse}}
+  print('successfully indexed records!');
 } on InterceptionException catch (_) {
   // Ignore InterceptionException
 }