rtmp-services: Update Picarto maximum audio bitrate

Remove the limit on maximum audio bitrate for Picarto.
http://help.picarto.tv/knowledge_base/topics/how-to-configure-open-broadcaster-software

plugins/rtmp-services/data/package.json

 {
 	"url": "https://obsproject.com/obs2_update/rtmp-services",
-	"version": 66,
+	"version": 67,
 	"files": [
 		{
 			"name": "services.json",
-			"version": 66
+			"version": 67
 		}
 	]
 }

plugins/rtmp-services/data/services.json

@@ -827,8 +827,7 @@
             "recommended": {
                 "keyint": 2,
                 "profile": "main",
-                "max video bitrate": 3500,
-                "max audio bitrate": 128
+                "max video bitrate": 3500
             }
         },
         {