Merge pull request #1409 from jokimina/dev_for_pr2

[Update]删除示例配置中未使用的BROKER_URL配置

config_example.py

@@ -51,11 +51,6 @@ class Config:
     REDIS_HOST = '127.0.0.1'
     REDIS_PORT = 6379
     REDIS_PASSWORD = ''
-    BROKER_URL = 'redis://%(password)s%(host)s:%(port)s/3' % {
-        'password': REDIS_PASSWORD,
-        'host': REDIS_HOST,
-        'port': REDIS_PORT,
-    }
 
     def __init__(self):
         pass