Correct the Kickass migration (#649)

src/NzbDrone.Core/Datastore/Migration/129_remove_kickass_again.cs

@@ -0,0 +1,14 @@
+using FluentMigrator;
+using NzbDrone.Core.Datastore.Migration.Framework;
+
+namespace NzbDrone.Core.Datastore.Migration
+{
+    [Migration(129)]
+    public class remove_kickass_again : NzbDroneMigrationBase
+    {
+        protected override void MainDbUpgrade()
+        {
+            Delete.FromTable("Indexers").Row(new { Implementation = "KickassTorrents" });
+        }
+    }
+}