Upload Cancel
=============

Destory a temporary file

Request
-------

:: 

    POST https://api.cloudplan.biz/api/file/upload_cancel
    
    {
        "file_id": "..."
    }

Reply
-----

::

    {
        "result": true/false
        "reason": any error code (on failure)
    }


Error Codes
-----------

::

    file_id_empty
    file_not_found
    user_has_no_access