When an ignored file is removed (e.g. a package patch is no longer
needed after a version bump), the corresponding entry in the ignore list
is no longer needed.
However, we currently only validate that an ignored *test* still fails,
not that a ignore files is now missing.
Add a new test to check-package that does that check, and add a
test-case for that check.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Ricardo Martincoski <ricardo.martincoski@gmail.com>
