title: How do I undo the last Add-Migration command?
body: <p>I have created a migration using the <code>Add-Migration</code> command, but I'd like to change the name of that migration. How can I undo the migration command, so that I can regenerate it using the new desired name?</p>
  
  <p>Is it just a matter of deleting the generated files, or this could be a bad idea?</p>