Refactor, remove unnecessary empty class body

Co-authored-by: Mauro Servienti <[email protected]>

Author: hsvotwa

samples/logging/metrics/Metrics_6/Endpoint/SomeCommand.cs

@@ -1,6 +1,3 @@
 using NServiceBus;
 
-class SomeCommand :
-    ICommand
-{
-}
+class SomeCommand : ICommand;