remove semantically redundant empty lists

Author: yasunariw

documentation/config_docs.md

@@ -83,21 +83,18 @@ A json object with fields of bools for each status type.
             "allow": [
                 "backend"
             ],
-            "ignore": [],
             "channel": "backend"
         },
         {
             "allow": [
                 "a1"
             ],
-            "ignore": [],
             "channel": "a1-bot"
         },
         {
             "allow": [
                 "a3"
             ],
-            "ignore": [],
             "channel": "a3"
         },
         {
@@ -141,20 +138,16 @@ A **label rule** specifies whether or not a Slack channel should be notified, ba
             "allow": [
                 "backend/a1"
             ],
-            "ignore": [],
             "channel": "a1"
         },
         {
             "allow": [
                 "backend/a5",
                 "backend/a4"
             ],
-            "ignore": [],
             "channel": "backend"
         },
         {
-            "allow": [],
-            "ignore": [],
             "channel": "all-push-events"
         }
     ]

test/notabot.json

@@ -20,27 +20,22 @@
                 "allow": [
                     "backend/a1"
                 ],
-                "ignore": [],
                 "channel": "a1"
             },
             {
                 "allow": [
                     "backend/a1/longest"
                 ],
-                "ignore": [],
                 "channel": "longest-a1"
             },
             {
                 "allow": [
                     "backend/a5",
                     "backend/a4"
                 ],
-                "ignore": [],
                 "channel": "backend"
             },
             {
-                "allow": [],
-                "ignore": [],
                 "channel": "all-push-events"
             }
         ]
@@ -52,25 +47,21 @@
                 "allow": [
                     "backend"
                 ],
-                "ignore": [],
                 "channel": "backend"
             },
             {
                 "allow": [
                     "a1"
                 ],
-                "ignore": [],
                 "channel": "a1-bot"
             },
             {
                 "allow": [
                     "a3"
                 ],
-                "ignore": [],
                 "channel": "a3"
             },
             {
-                "allow": [],
                 "ignore": [
                     "backend",
                     "a1",