title: How can I remove deleted files from emacs-projectile's cache if `projectile-invalidate-cache` doesn't do the trick?
body: <p>Pretty much what the title says. For whatever reason <code>projectile-invalidate-cache</code> does not remove dead files from projectile's cache, or at least not from the results it presents me. I am using Spacemacs, an extension of Emacs, but I believe this issue is specific to projectile.</p>
  
  <p>Restarting the editor does not fix the issue.</p>