net/nfp: remove reference to old offload API
net/nfp: remove reference to old offload API

This was missed in a previous patch for using new offload API.

It turns out the line can be removed because that internal PMD
crc_len data is not being used.

Fixes: a922c6a789ff ("net/nfp: support new HW offloads API")

Signed-off-by: Alejandro Lucero <1ffca3a1926aae782ae3c39a5b308878ba1e5683@netronome.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk