修复导入错误，优化不使用的模块

sf_bf_connect/models/process_status.py

@@ -1,10 +1,10 @@
 from datetime import datetime
+from collections import defaultdict, namedtuple
 import logging
 import requests
 from odoo import api, fields, models, SUPERUSER_ID, _
 from odoo.exceptions import UserError
 from odoo.exceptions import ValidationError
-from collections import defaultdict, namedtuple
 
 _logger = logging.getLogger(__name__)