title: Is Corda support state deletion scenario?
body: <p>Is corda support state deletion scenario when don't need to use some state (in both dev/prod)
  Because I face exception when start node like "class not found exception", It's happen when I delete state class in project and use same old persistence file.</p>
  
  <p>I think it because of state class already insert in VAULT_STATES and it can't find that class when start node.</p>
  
  <p>I expect to have some method that provide state deletion.</p>
  
  <p><strong>More info</strong>
  In Dev side I delete persistence file and of course it's work, but I just worry about Production side.</p>