Bug#32972: Apt gives scaring warning while removing required but obsolete packages

[Alexander Shumakovitch <shurik@math.unibas.ch>]

Package: apt
Version: 0.1.9

During my upgrade from hamm to slink using dselect-apt combination, I've got
the following message:
  WARNING: The following essential packages will be removed
  This should NOT be done unless you know exactly what you are doing!
    slang0.99.38

Although I was completely sure that slang0.99.38 is not in the distribution
anymore, that warning forced me to press Ctrl-C, go to Select and to
double-check that it's indeed obsolete. I believe some people could even
abandon the installation after this. I guess, apt shouldn't warn about any
packages being removed if they are "obsolete" (that said not in the
distribution).

Thanks!

 --- Shurik.