chore: remove delay to start datastore in tests (#3738)

chore: remove start delay is datastore tests

Author: Jordan-Nelson

packages/amplify_datastore/example/integration_test/clear_test.dart

@@ -22,7 +22,7 @@ void main() {
       await Amplify.DataStore.save(blog);
       var resultOne = await Amplify.DataStore.query(Blog.classType);
       expect(resultOne, isNotEmpty);
-      await Amplify.DataStore.clear();
+      await clearDataStore();
       var resultTwo = await Amplify.DataStore.query(Blog.classType);
       expect(resultTwo, isEmpty);
     });

packages/amplify_datastore/example/integration_test/utils/setup_utils.dart

@@ -12,7 +12,6 @@ import 'package:amplify_flutter/amplify_flutter.dart';
 const ENABLE_CLOUD_SYNC =
     bool.fromEnvironment('ENABLE_CLOUD_SYNC', defaultValue: false);
 const DATASTORE_READY_EVENT_TIMEOUT = const Duration(minutes: 10);
-const DELAY_TO_START_DATASTORE = const Duration(milliseconds: 500);
 const DELAY_TO_CLEAR_DATASTORE = const Duration(seconds: 2);
 const DELAY_FOR_OBSERVE = const Duration(milliseconds: 100);
 
@@ -106,7 +105,6 @@ class DataStoreStarter {
 }
 
 Future<void> startDataStore() async {
-  await Future.delayed(DELAY_TO_START_DATASTORE);
   await DataStoreStarter().startDataStore();
 }