Fixed delete

Author: phillwiggins

lib/src/objects/parse_object.dart

@@ -263,11 +263,11 @@ class ParseObject extends ParseBase implements ParseCloneable {
   }
 
   /// Deletes the current object locally and online
-  Future<ParseResponse> delete({String objectId, String path}) async {
+  Future<ParseResponse> delete({String id, String path}) async {
     try {
       path ??= _path;
-      objectId ??= objectId;
-      final Uri url = getSanitisedUri(_client, '$_path/$objectId');
+      id ??= objectId;
+      final Uri url = getSanitisedUri(_client, '$_path/$id');
       final Response result = await _client.delete(url);
       return handleResponse<ParseObject>(
           this, result, ParseApiRQ.delete, _debug, className);