libpdbg/bmcfsi: argp.h is unused
libpdbg/bmcfsi: argp.h is unused

We can't build against ulibc with this. Luckily we don't use it, so
remove the include.

Signed-off-by: Joel Stanley <4816dabf8db1bc6cac35b3a24cab2ff844b5b0c7@jms.id.au>

open-power/pdbg,open-power/pdbg,GHF/pdbg,GHF/pdbg,open-power/pdbg