We already changed how we do this since the context menu entry
was removed, just cleaning up the now-unneeded needles.
Signed-off-by: Adam Williamson <awilliam@redhat.com>
We had a ton of needles all covering something very similar
(press a "Credits" button in a GNOME app). There are about four
real variations: old-style regular face white-on-black (eog),
old-style regular face (nautilus and evince before recent
libadwaita ports), old-style bold face (GTE and Clocks before
new libadwaita), and new-style (everything that's been ported
to use libadwaita for its About page). Let's just rationalize
it down to those, using the same needle tag for all of them.
Signed-off-by: Adam Williamson <awilliam@redhat.com>