By removing the last two libs: nullcanvas and directx5canvas.

directx5canvas seems to be dead and nullcanvas don't have entries in scp2.

Change-Id: Ib8fc1da123f8374fb83192f14db730638213f564
Reviewed-on: https://gerrit.libreoffice.org/3626Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>