makedevs: remove target package

makedevs: remove target package

The makedevs package is a fork of the makedevs tool from busybox. It is
part of the Buildroot infrastructure, not something that should be used
on the target. It something like this is needed on the target, upstream
busybox should be used. And if one of the Buildroot-specific features
is needed, then that feature should be upstreamed to busybox.

Besides, there were already two things wrong with the target package:
- it didn't take into account the overlap with busybox (no depends on
  BR2_PACKAGE_BUSYBOX_SHOW_OTHERS, no dependency on busybox);
- it didn't take into account the libcap feature.

The target package was introduced more or less accidentally in 81cd9d45
where the intention was to make it more similar to other packages.

So, kill it with fire.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>