Return args as part of task.get

the ui needs this to repair any failed app task

src/tasks.js

@@ -14,8 +14,6 @@ exports = module.exports = {
     stopTask: stopTask,
     stopAllTasks: stopAllTasks,
 
-    removePrivateFields: removePrivateFields,
-
     // task types. if you add a task here, fill up the function table in taskworker
     TASK_APP: 'app',
     TASK_BACKUP: 'backup',
@@ -269,9 +267,3 @@ function getLogs(taskId, options, callback) {
 
     callback(null, transformStream);
 }
-
-// removes all fields that are strictly private and should never be returned by API calls
-function removePrivateFields(task) {
-    var result = _.pick(task, 'id', 'type', 'percent', 'message', 'error', 'active', 'creationTime', 'result', 'ts', 'success');
-    return result;
-}