clean up

Author: muzahidul-opti

lib/src/utils/utils.dart

@@ -14,13 +14,10 @@
 /// limitations under the License.                                           *
 ///**************************************************************************/
 
-import 'dart:io' show Directory, FileSystemException, Platform;
-import 'dart:io' show File;
+import 'dart:io' show Platform;
 import 'package:optimizely_flutter_sdk/src/user_context/optimizely_user_context.dart';
 import 'package:optimizely_flutter_sdk/src/utils/constants.dart';
 import 'package:optimizely_flutter_sdk/src/data_objects/log_level.dart';
-import 'package:package_info_plus/package_info_plus.dart';
-import 'package:yaml/yaml.dart';