package/openfpgaloader: drop ftdipp

ftdipp is not needed since version 0.1 and
https://github.com/trabucayre/openFPGALoader/commit/3df577b70638c37885eef3a27b8931261b259e47



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>