Remove ingest server live-ord.twitch.tv from services.json

Server doesn't exist anymore
https://api.twitch.tv/kraken/ingests
http://blog.twitch.tv/2014/09/service-update-chicago-point-of-presence-closure/

plugins/rtmp-services/data/services.json

@@ -50,10 +50,6 @@
                 "name": "US East: New York, NY",
                 "url": "rtmp://live-jfk.twitch.tv/app"
             },
-            {
-                "name": "US Midwest: Chicago, IL",
-                "url": "rtmp://live-ord.twitch.tv/app"
-            },
             {
                 "name": "US West: Los Angeles, CA",
                 "url": "rtmp://live-lax.twitch.tv/app"