boot/beaglev-secondboot: remove package

The beaglev-secondboot was meant for the BeagleV-Starlight
board (beaglev_defconfig) but the support was removed.

Remove beaglev-secondboot too.

Signed-off-by: Romain Naour <romain.naour@smile.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
6 files changed