Remove devise_patch
Remove devise_patch

Originally added in https://github.com/sferik/rails_admin/commit/db0697975dd7fbb4473c145af42a5374a95f0472, this matches what's upstream in Devise (https://github.com/heartcombo/devise/blob/e8e0c275999dd98150197cab03acb5509cb16b6a/lib/devise/failure_app.rb#L226-L228 - last updated in https://github.com/heartcombo/devise/commit/17ec0c08edd0d5ee216105aeef741670fb28ac5a) and appears to no longer be needed.

sferik/rails_admin,sferik/rails_admin,sferik/rails_admin