remove unused broadcast field

app/controllers/RelayRound.scala

@@ -145,8 +145,9 @@ final class RelayRound(
       scoped = _ =>
         me =>
           env.relay.api.byIdAndContributor(id, me) map {
-            case None     => NotFound(jsonError("No such broadcast"))
-            case Some(rt) => JsonOk(env.relay.jsonView.withUrl(rt))
+            _ ?? { rt =>
+              JsonOk(env.relay.jsonView.withUrl(rt))
+            }
           }
     )
 

modules/relay/src/main/JsonView.scala

@@ -20,7 +20,6 @@ final class JsonView(baseUrl: BaseUrl, markup: RelayMarkup) {
             "slug"        -> trs.tour.slug,
             "description" -> trs.tour.description
           )
-          .add("credit", trs.tour.credit)
           .add("markup" -> trs.tour.markup.map(markup.apply))
           .add("url" -> withUrls.option(s"$baseUrl/broadcast/${trs.tour.slug}/${trs.tour.id}")),
         "rounds" -> trs.rounds.map { round =>

modules/relay/src/main/RelayTour.scala

@@ -9,7 +9,6 @@ case class RelayTour(
     name: String,
     description: String,
     markup: Option[String] = None,
-    credit: Option[String] = None,
     ownerId: User.ID,
     createdAt: DateTime,
     official: Boolean,