title: How to delete Azure DevOps enterprise application?
body: <p>I have an Azure AD B2C tenant that I want to delete (pita process!).
  So I have to delete manually all registered applications first.
  And somehow I got an enterprise application named "Azure DevOps" registered there. 
  Which is undeletable. How to remove it?</p>
  
  <p><a href="https://i.stack.imgur.com/S7pSK.png" rel="noreferrer"><img src="https://i.stack.imgur.com/S7pSK.png" alt="enter image description here"></a></p>