Make DataBus no longer inherit from Feature

Author: bording

src/NServiceBus.Core/obsoletes-v10.cs

@@ -315,21 +315,12 @@ public interface IDataBusSerializer
 
 namespace NServiceBus.Features
 {
-    using System;
-
     [ObsoleteEx(
             Message = "The DataBus feature has been released as a dedicated package, 'NServiceBus.ClaimCheck'",
             RemoveInVersion = "11",
             TreatAsErrorFromVersion = "10")]
-    public class DataBus : Feature
+    public class DataBus
     {
-        internal DataBus() => throw new NotImplementedException();
-
-        [ObsoleteEx(
-            Message = "The DataBus feature has been released as a dedicated package, 'NServiceBus.ClaimCheck'",
-            RemoveInVersion = "11",
-            TreatAsErrorFromVersion = "10")]
-        protected internal override void Setup(FeatureConfigurationContext context) => throw new NotImplementedException();
     }
 }