关于qbittorent新版本中api错误的问题

[lihaowei2028]

在qbittorrent.py中，qBittorrentAPIHandlerV2类中两个删除种子的方法错误。

修正方法如下：

    # Batch Delete torrents
    def delete_torrents(self, torrent_hash_list):
        return self._session.post(self._host+'/api/v2/torrents/delete', data={'hashes':'|'.join(torrent_hash_list), 'deleteFiles': False})
    
    # Batch Delete torrents and data
    def delete_torrents_and_data(self, torrent_hash_list):
        return self._session.post(self._host+'/api/v2/torrents/delete', data={'hashes':'|'.join(torrent_hash_list), 'deleteFiles': True})