No need to define assert function in PMD since RTE provides the same.
Remove private definition and use RTE_VERIFY instead.
Suggested-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>