Comment 0 for bug 1595485

(NOTE: all of them are gone from Debian)
1) libpng.
Superseded by libpng16

no reverse dependencies I can see
2) insighttoolkit
Superseded by insighttoolkit4
it doesn't build on powerpc, so we have to remove binaries here
(sorry, but Debian maintains only amd64 and i386, and we can't maintain all the others including powerpc)

just removing vmtk/powerpc should allow its removal too

3) vtk
Superseded by vtk6

needs vmtk migration
and fslview removal or demote to proposed.
Debian broke it, because it is already broken, and it has little fix in time probability
(probably we will remove in Debian soon)

4) samtools
old binaries left on armhf: libbam-dev, samtools (from 0.1.19-1ubuntu1)
old binaries left on powerpc: libbam-dev, samtools (from 0.1.19-1ubuntu1)
old binaries left on s390x: libbam-dev, samtools (from 0.1.19-1ubuntu1)

removed in Debian too

5) pepperflashplugin-nonfree [i386]
please remove on i386 (removed in Debian too)
upstream is not supporting it, so it can't be downloaded/installed on i386 anymore

6) singular [armhf]
removed in Debian too

7) fpc [powerpc]
powerpc sadness with glib 2.23
https://bugs.launchpad.net/ubuntu/+source/fpc/+bug/1562480

8) mame [ppc64el]
sandness on that arch, removed in Debian

thanks