fix multi sub in sample config

Author: unixliang

etc/consumerconfig.conf

@@ -7,26 +7,23 @@
                 "ip": "127.0.0.1",
                 "port": "8001"
             },
-            "scale": "1000",
-            "sub_ids": [1]
+            "scale": "1000"
         },
         {
             "addr":
             {
                 "ip": "127.0.0.1",
                 "port": "8002"
             },
-            "scale": "1000",
-            "sub_ids": [1]
+            "scale": "1000"
         },        
         {
             "addr":
             {
                 "ip": "127.0.0.1",
                 "port": "8003"
             },
-            "scale": "1000",
-            "sub_ids": [1]
+            "scale": "1000"
         }
     ]
 }