Other than gadget,kernel and base snap, I added Hello snap to model assertion file and generated UC20 image.Then I tried to remove the Hello snap from the Ubuntu terminal. But I am not able remove the snap and seeing below log.
$snap remove Hello.
error: cannot remove “Hello”: snap “Hello” is not removable: snap is required
The snaps which are added to the model assertion file can not be removed?
Does model assertion file define the snaps which should be present in recovery mode?